The Lloyd's slip - the MRC (Market Reform Contract) - is the placement document for risks insured at Lloyd's. The London-market slip-drafting and line-slip placement workflow involves the Lloyd's broker submitting the slip via PPL (Placing Platform Limited), the lead-syndicate negotiation, the following-market signing, the Bureau accounting reconciliation, and the slip wording that survives the post-bind audit. In 2026, AI-assisted slip drafting compresses the drafting cycle from 3-7 days to 6-18 hours and produces slips that pass Bureau audit at materially higher rates. This lesson walks the AI-assisted MRC slip workflow on a property cat-XOL placement, compares facultative slip vs. line-slip vs. binding-authority arrangement (cover-holder slip with delegated authority), and produces the producer broker's placement narrative and the underwriter's slip-leader memo. The headline rule: the Lloyd's slip is a contract that must survive Bureau accounting and post-bind audit; AI drafts but the Lloyd's broker and lead-underwriter own every word of the wording, every line written, and every signature that follows the slip into the Bureau queue.

The MRC Architecture

MRC (Market Reform Contract): the standardized Lloyd's slip format introduced by the Lloyd's Market Association in 2007 and refined every two-to-three years thereafter. Before the MRC, Lloyd's slips varied broker-by-broker and syndicate-by-syndicate; clauses appeared in different orders, wordings cross-referenced inconsistent precedents, and Bureau accounting (XCS / Xchanging Claims Services) handled thousands of slips with non-standard structure. The MRC ended that. Every PPL-placed slip now follows the same section sequence, the same labeling, and the same metadata.

MRC section structure. Risk Details (insured legal name, business activities, period of cover, interest insured, situation, original conditions reference); Information (warranty-quality information from the cedent or insured, exposure schedules, prior-year results, claims history); Insurer Information (named syndicates by box number with line percentage, signing slip leader, identified following market); Premium (gross premium, brokerage 12-18%, net to syndicate, premium-payment warranty, premium-payment terms); Subjectivities (conditions precedent or subsequent - survey, exposure data, sanctions screening, regulatory approval); Conditions (perils insured, sums insured, deductibles, exclusions, choice of law and jurisdiction); Choice of Law and Jurisdiction (English law and English jurisdiction is default for Lloyd's, but reinsurance slips often elect New York or Bermuda law); Premium Payment Warranty (the cedent's obligation to pay on agreed terms); Notices Clause; Several Liability Clause (each subscribing syndicate liable only for its proportion); Brokerage (the broker's commission as a percentage of gross); Information Sections; Endorsements (any post-bind agreed changes, signed by the slip leader on behalf of the market). Length: 30 to 100 pages depending on complexity - a clean property cat-XOL with a single peril and standard exclusions can sit at 30-40 pages; a multi-peril multi-territory facility with extensive subjectivities and endorsement schedule can run to 100+.

PPL (Placing Platform Limited). Lloyd's digital placement platform, owned by the Lloyd's Market Association and the London Market Group, mandated for in-scope placements since 2020. PPL replaces paper slips with electronic placement, captures the full digital audit trail of which underwriter wrote which line at what time on which version of the slip, and integrates with Bureau accounting (Velonetic, the successor to XCS, owns the back-office accounting flow). 2026 status: roughly 85% of London-market placements move via PPL; complex specialty placements (large facultative property cat, bespoke cyber, novel parametric) still see paper or hybrid placements for the lead's underwriting file but settle digitally. AI-assisted slip drafting integrates with PPL via API - the AI drafts the MRC content, the broker reviews and uploads, PPL captures the placement, syndicates write lines digitally.

Property Cat-XOL MRC Walkthrough

Worked example: a US mid-size carrier (the cedent - call it Heartland Mutual, $1.8B premium, Tier-1 wind and Midwest convective storm exposure) places a property cat-XOL layer of $50M xs $100M at Lloyd's for the 4/1/26-3/31/27 treaty year. The placing broker is one of the five major London reinsurance brokers - Aon Reinsurance Solutions, Guy Carpenter, Howden Tiger, McGill and Partners, or BMS Re Specialty. The broker drafts the MRC, with AI assisting on five specific drafting tasks: (1) MRC structure population from the prior-year placement (Hiscox Syndicate 33 was lead at $12M line; following market included Beazley Syndicate 623, Brit Syndicate 2987, Apollo Syndicate 1969, Talbot Syndicate 1183); (2) updated risk details and exposure data (the cedent's $182M TIV at the worked Dallas Acme Warehousing case adds to the cat aggregate; the 78% pre-bind Tier-1 wind aggregate becomes 79.2% post-bind on Heartland's overall book; the cat-model output from Verisk AIR for the 1-in-250 PML moves from $1.18B to $1.24B); (3) cat-model output integration (RMS Touchstone + Verisk AIR run head-to-head, with secondary uncertainty surfaced and reconciled in a side-by-side exhibit); (4) market-condition language updates (the 2026 renewal sees rate-on-line firmness after the 2024-2025 cat years, with reinstatement availability tightened); (5) wording version control (every change tracked, every prior version archived, the slip leader sees a redline against last year and a clean version side-by-side).

Section 1 Risk Details: cedent name (Heartland Mutual Insurance Company, a Missouri-domiciled mutual carrier); business activities (commercial multi-line property and casualty with personal lines residual); period 4/1/26-3/31/27; interest insured (the cedent's net retained property exposure after underlying treaties and facultative placements); situation (United States, all states, with Tier-1 wind territory specifically scheduled).

Section 2 Insurer Information: lead syndicate Hiscox Syndicate 33 (15% line, $7.5M); following market across Beazley Syndicate 623 (12%), Brit Syndicate 2987 (11%), Apollo Syndicate 1969 (10%), Talbot Syndicate 1183 (8%), Atrium Syndicate 609 (7%), Tokio Marine Kiln Syndicate 510 (7%), Ascot Syndicate 1414 (6%), Liberty Specialty Markets Syndicate 4472 (6%), MAP Syndicate 2791 (5%), and Probitas Syndicate 1492 (4%) - totaling 91% with the remaining 9% allocated through over-subscription scaling on a final placement push. Total written line: $50M.

Section 3 Premium: gross premium $11.4M (rate-on-line 22.8% - firming from 19.5% the prior year); brokerage 15% ($1.71M); net to syndicates $9.69M; premium-payment warranty 30 days from inception with 7-day grace.

Section 4 Conditions: perils insured (US named windstorm including hurricane and named tropical storm, severe convective storm including tornado and hail, earthquake and resulting fire-following, terrorism with TRIPRA back-stop); sums insured ($50M xs $100M per event); deductibles (event deductible from the underlying); exclusions (war, nuclear, cyber-physical with affirmative AI endorsement under Coalition's framework where applicable, mold and microbe sub-limits); wordings (LMA 5025 Pandemic exclusion incorporated by reference; LMA 5390 Cyber exclusion; the Cedent's underlying coverage terms back-to-back where required).

Section 5 Endorsements: any cedent-specific terms (a $5M reinstatement at 100% additional premium, second event only); treaty-specific endorsements (Named Storm Hours Clause 72-hour, Earthquake Hours Clause 168-hour); 2026-specific endorsements (an AI-governance representation from the cedent that bias testing was performed on its rating models per its home-state DOI requirements - a new clause the reinsurer wording team added in 2025).

The Lloyd's Broker Workflow

Stage 1 - Submission preparation (2-3 weeks pre-placement deadline). The broker collects the cedent's exposure data (TIV by territory, COPE attributes, secondary modifiers), claims history (5-year loss runs by line and year), reinsurance program (existing layers and how this placement fits), cat-model output (RMS Touchstone and Verisk AIR PML curves at 1-in-50/100/250/500/1000 with secondary uncertainty), and treaty objectives (rate target, structure preferences, lead-syndicate target). AI assists data aggregation: pulling structured fields from the cedent's submission package, validating completeness against the broker's checklist, identifying gaps, drafting the missing-information request. Owner: the placement broker with the cedent's reinsurance accounting director.

Stage 2 - Slip drafting (6-18 hours AI-assisted vs. 3-7 days manual). The broker drafts the MRC by populating the prior-year structure, updating risk details, integrating cat-model output, refreshing wordings, and capturing the cedent's specific objectives. AI assists with: section population, redline against prior year, wording version control, regulatory-language refresh (e.g., updated sanctions wording from 2025-2026 OFSI guidance), and a draft of the placement narrative. Broker reviews every section, customizes voice, makes the slip the broker's own, and signs off. The slip then enters PPL.

Stage 3 - Lead syndicate negotiation (typically 3-7 days at Lloyd's underwriting boxes or via PPL chat). The broker pre-positions with the identified lead - Hiscox Syndicate 33 in this example because Hiscox led last year and the relationship is warm. The lead underwriter reads the slip, the placement narrative, and the cat-model exhibit; asks questions; negotiates terms (rate-on-line, reinstatement availability, hours clauses, exclusions); writes the lead line of 15-25%. The lead's decision sets the benchmark for the following market. If the lead writes at 22.8% rate-on-line with 100% reinstatement at 100% additional premium, the following market will largely accept the same; if the lead pushes for 24% with no reinstatement, the following negotiates from that anchor.

Stage 4 - Following-market signing (5-10 days). The broker presents the lead-signed slip to the following market. Each following syndicate reviews independently; lines accumulate to 100% (or sometimes oversubscribed, in which case the broker scales lines back proportionally with the syndicates' agreement). Following-market negotiation is typically lighter than the lead's; following accepts lead-positioned terms with minor adjustments. The broker tracks every line written, every condition modification requested, and every signing time in PPL's audit trail.

Stage 5 - Bureau accounting (Velonetic). Once the slip is 100% written, Velonetic (formerly XCS / Xchanging Claims Services, rebranded in 2024) processes premium collection from the cedent and allocates premium credit to syndicates per their written lines. Reconciliation breaks (a syndicate's line in Velonetic not matching its line on the slip) are escalated within 5 business days. Premium settlement timing follows the slip's premium-payment warranty: typically 30 days from inception with 7-day grace.

Stage 6 - Post-bind audit. Within 60-90 days of binding, Velonetic and the Lloyd's Performance Management Directorate audit the slip for: regulatory compliance (PRA and FCA prudential standards; Lloyd's Underwriting Standards); proper signing chain (every line written by an authorized underwriter at the box number that wrote it; signing slip leader documented); valid wordings (LMA-approved clauses where required; bespoke wordings reviewed for ambiguity); clear conditions (no contradiction between sections; subjectivities resolved or escalated). AI-assisted slips written from clean structured input pass first-pass audit at 92-96%; manually-drafted slips pass at 78-84%. The 14-point gap matters because audit-flagged slips delay claim payment, complicate Bureau reconciliation, and expose the broker to errors-and-omissions exposure.

Facultative Slip vs. Line-Slip vs. Binding Authority

Three placement structures cover the bulk of Lloyd's reinsurance and specialty business; choosing among them is a function of risk volume, underwriting scrutiny appetite, and economic efficiency.

Facultative slip. Single-risk placement - one slip per risk. Underwriters review each risk individually and write a line specific to that risk. Suitable for unique large risks (a $300M data-center facultative placement, a complex multi-territory cyber risk, a bespoke parametric structure) where the underwriter wants to see the specific exposure before committing capacity. Placement timeline: 2-6 weeks. Per-risk underwriter time: substantial. Used in 2026 for roughly 18-22% of London-market non-treaty business.

Line-slip (multi-risk facility). The broker has authority to bind individual risks within defined criteria (class, sum insured cap, geography, hazard class) onto a single slip with pre-written syndicate lines. Underwriters write lines on the facility - not on individual risks. Suitable for repetitive risk patterns (property cat-XOL across multiple cedents in similar exposure profiles; specialty cargo coverage for a single fleet of carriers; small-business cyber coverage). Significantly faster placement per-risk than facultative (hours vs. weeks); less per-risk underwriter scrutiny but more rigorous facility-design and bordereau-reporting discipline. Used in 2026 for roughly 38-44% of London-market non-treaty business.

Binding authority arrangement (cover-holder slip with delegated authority). An MGA-style arrangement where a cover-holder (a broker, an MGA, or a specialty intermediary) has delegated authority to bind risks on behalf of subscribing syndicates within strictly-defined parameters. The cover-holder operates under a bordereau-reporting cadence (typically monthly), and the underwriters preserve audit rights and the right to terminate authority. Suitable for high-volume specialty business - small commercial property in the US through a US-based wholesale MGA; specialty cargo through a Singapore cover-holder; cyber-personal coverage through a digital MGA. The cover-holder slip captures the delegated-authority limits, the class criteria, the per-risk caps, the bordereau format, the underwriter audit rights, and the termination triggers. Used in 2026 for roughly 36-42% of London-market non-treaty business.

Trade-offs. Facultative: maximum underwriter scrutiny; longest placement timeline; best for unique large risks. Line-slip: moderate scrutiny; faster placement; works when the facility design captures the risk pattern. Binding authority: minimum direct scrutiny per-risk; fastest placement; depends entirely on the cover-holder's discipline and the bordereau-reporting integrity. The broker matches structure to risk - and 2026 sees increasing use of AI-assisted facility-design analytics to optimize the line-slip vs. binding-authority decision.

Producer Broker's Placement Narrative

The placement narrative is the broker's pitch to the lead and following market. It accompanies the slip in PPL and the broker's physical underwriting file. It is the document the lead underwriter reads first; it is the document the following market reads before deciding whether to follow at the lead's terms.

Sections. Cedent introduction (history, market position, exposure profile, management team, recent strategic moves). Cat-model rationale (RMS Touchstone and Verisk AIR side-by-side, with the secondary-uncertainty reconciliation; PML curve at 1-in-50/100/250/500/1000; commentary on differences between models). Reinsurance program overview (the existing program, the layer being placed, how this layer fits the cedent's risk-appetite and capital-management strategy). Pricing rationale (rate-on-line, payback period, market comparables - the broker often pulls 3-5 recent comparable placements with rate-on-line and payback). Placement strategy (lead-target identified and rationale; following-market panel; how the broker plans to fill the layer). Subjectivities (any conditions precedent or subsequent that the cedent or broker has identified).

AI-assisted narrative drafting. The AI generates the initial draft from the cedent's submission package, the broker's prior-placement files, and structured cat-model output. The broker customizes voice, adds carrier-specific commentary (the cedent's CRO's recent commitment to expanding cat-XOL retention, the cedent's home-state DOI's posture on AI governance), and adjusts the placement strategy section based on intelligence about lead-syndicate appetite that the AI cannot know. AI-assisted drafting compresses 12-25 hours of manual work to 4-8 hours. The narrative is the broker's voice; the AI is the broker's drafting assistant.

Underwriter's Slip-Leader Memo

The slip-leader memo is the lead underwriter's internal documentation of the risk analysis, the negotiation position, and the binding decision. It is required by Lloyd's Performance Management for syndicate-level risk-management documentation and forms the audit trail for the syndicate's risk committee.

Sections. Risk summary (cedent, period, structure, layer, lead line proposed). Exposure assessment (TIV by territory, COPE attribute quality, secondary modifiers, geocoding precision - the lead underwriter forms an independent view of exposure quality and notes departures from the broker's representation). Cat-model analysis (the lead's own RMS or AIR run if available; commentary on the broker's cat-model exhibit; identified differences and resolution). Pricing analysis (the lead's rate-on-line target; market positioning; payback period; how this placement compares to the syndicate's other recent placements in the class). Coverage terms (per-event limit and attachment, deductible, reinstatement, hours clauses, exclusions, choice of law). Subjectivities (any subjectivities the lead requires the cedent to satisfy). Binding decision (yes/no/conditional; if conditional, the conditions and the resolution path). Rationale (why the line size, why the rate, why the structure). Recommended line size (the percentage line the syndicate writes - typically 15-25% for a Lloyd's lead on a cat-XOL).

AI-assisted memo drafting. The AI generates the structural draft from the slip and the placement narrative. The lead underwriter customizes the memo with the syndicate's proprietary risk analysis (the syndicate's internal cat-aggregation view, the syndicate's reserving posture, the syndicate's pricing model's rate indication), the lead's negotiation position (where the lead is willing to flex, where the lead will hold), and the lead's market intelligence (what other syndicates are likely to follow, where competitive pressure may emerge). The lead signs and files internally. The syndicate's risk committee reviews quarterly. Lloyd's Performance Management can request the memo on examination. AI cuts drafting time from 6-12 hours to 2-4 hours; the lead's judgment cuts the same.

Bureau Accounting and Post-Bind Audit Discipline

Velonetic-handled Bureau accounting is the back-office discipline that turns a written slip into a paid line. The cedent pays gross premium net of broker's commission to Velonetic; Velonetic allocates to syndicates by written line; syndicates receive premium credit; reconciliation breaks are reported within 5 business days and escalated by 10. Where the slip captures additional features - installment premium schedules, profit commission, additional reinstatement premium triggered by an event - Velonetic accounts for each on the agreed cadence.

Post-bind audit. Lloyd's Performance Management runs a sampling-based audit on slips bound in the prior 60-90 days. The sample is selected to capture: high-premium placements (over $5M gross); novel structures (parametric, AI-related, cyber-physical with affirmative AI endorsement); lead changes from prior year; following-market expansion. The audit reviews regulatory compliance (PRA/FCA capital and conduct standards), proper signing chain (every line written by an authorized underwriter), wording validity (LMA-approved clauses where required, bespoke wordings reviewed for ambiguity), and condition clarity. Audit findings produce one of three outputs: clean (no remediation required), remediation required (broker or lead must address before next renewal), or formal escalation (a Lloyd's Performance Management directive to the syndicate or the broker). The AI-assisted drafting's 92-96% first-pass audit rate vs. the manual 78-84% is the broker's E&O moat: fewer audit findings means fewer remediation cycles, lower reputational risk with the lead syndicate, and easier future placements.

The 2026 Evolution - AI Platforms and the Broker Workflow

2026 sees specific platform deployments across the London-market broker workflow. PPL's API integration with broker-side AI drafting tools is the structural backbone. Aon Reinsurance Solutions, Guy Carpenter, Howden Tiger, McGill, and BMS Re each run their own AI-assisted drafting stacks layered over PPL - pulling from prior-year placements in their internal libraries, integrating with Verisk and RMS cat-model output APIs, and using LLM-based wording-revision tools to refresh language across the renewal cycle. The broker reviews and signs; the AI accelerates the drafting; PPL captures the digital placement.

Send Flow and similar workflow platforms have entered the London market, providing cedent-side submission preparation that hands clean structured data into the broker's drafting platform. The cedent's reinsurance accounting director uses Send Flow to assemble the submission packet (exposure data, claims history, prior-year structure, cat-model output, treaty objectives) in structured form; the broker pulls structured data into the MRC drafting engine; the slip drafts in hours rather than days. The same workflow extends to treaty-renewal placements (covered in the treaty wording markup lesson) and facultative cession (covered in the facultative cession lesson).

The AI-governance representation. The 2025-2026 reinsurer wording teams added a representation about the cedent's AI use to the standard cat-XOL slip - the cedent represents that AI/ML systems used in underwriting and pricing are subject to documented governance, bias testing per the cedent's home-state DOI requirements, and credentialed-reviewer oversight per the NAIC Model Bulletin §4.3 standard. The Lloyd's broker drafts the representation, the cedent's general counsel reviews, and the slip leader signs off. Material misrepresentation regarding AI use is grounds for treaty rescission or non-renewal - language that did not appear in 2022 slips and is now standard in 2026.

Key Takeaways

• MRC (Market Reform Contract): standardized Lloyd's slip introduced 2007 by the LMA. Sections include Risk Details, Information, Insurer Information, Premium, Subjectivities, Conditions, Choice of Law, Premium-Payment Warranty, Notices, Several Liability, Brokerage, Endorsements. Length 30-100 pages.
• PPL (Placing Platform Limited): Lloyd's digital placement platform; mandated for in-scope placements since 2020. 2026 share: 85% of London placements. AI-assisted drafting integrates via API; complex specialty still uses paper or hybrid.
• Six broker workflow stages: submission prep, slip drafting, lead negotiation, following-market signing, Bureau accounting (Velonetic), post-bind audit. AI-assisted drafting compresses 3-7 days manual to 6-18 hours.
• AI-assisted slip post-bind audit pass rate 92-96% first pass vs. 78-84% manual. The 14-point gap is the broker's E&O moat - fewer remediation cycles, lower reputational risk, easier future placements.
• Top-5 Lloyd's reinsurance brokers: Aon Reinsurance Solutions, Guy Carpenter, Howden Tiger, McGill and Partners, BMS Re Specialty. Each operates its own AI-assisted drafting stack layered over PPL.
• Lead syndicate writes 15-25% line; following market 75-85% across multiple syndicates. Lead-line decision sets the benchmark; following negotiates from the lead's anchor.
• Three placement structures: facultative (18-22% of non-treaty), line-slip (38-44%), binding authority cover-holder slip (36-42%). Trade-off is scrutiny vs. speed; broker matches structure to risk.
• Producer broker's placement narrative: cedent intro, cat-model rationale, reinsurance program, pricing, placement strategy, subjectivities. AI-assisted drafting compresses 12-25 hours to 4-8 hours; narrative is the broker's voice with AI as drafting assistant.
• Lead underwriter's slip-leader memo: risk summary, exposure, cat-model, pricing, coverage terms, subjectivities, binding decision, rationale, recommended line size. Required by Lloyd's Performance Management for syndicate risk-management audit trail; AI cuts drafting time from 6-12 hours to 2-4.