A slip deal is how a broker in the Lloyd’s and wider London insurance market places a single large or complex risk across multiple underwriters at once, with each one signing on for a percentage of the total exposure. The broker circulates a document called a slip, underwriters review it and commit capital to their share, and when enough commitments are gathered the risk is bound. The model exists because no single insurer typically has the capacity or appetite to carry 100% of risks like satellite launches, offshore energy platforms, or catastrophe reinsurance programs.
What Goes on the Slip
The slip is the document that evidences the insurance contract before any formal policy wording is produced. It has to carry enough detail for an underwriter to assess the exposure and commit capital on the spot.
A typical slip sets out the full legal name of the insured, the period of coverage, and a precise description of the subject matter being insured, whether that is a physical asset, a fleet, a liability exposure, or a construction project. It states the limit of indemnity, meaning the maximum amount the insurers collectively agree to pay for a covered loss. The premium appears either as a fixed amount or as a rate on line, expressed as a percentage of the coverage limit.
The slip also records any special clauses, warranties, conditions, exclusions, and deductibles that modify the standard coverage, and it indicates the total capacity the broker needs to place. These terms have to be clear enough that every underwriter who signs is agreeing to the same deal, because the slip itself becomes the legal foundation for the final policy wording.
The Two Parties Behind Every Slip
Two parties drive the transaction: the broker, who represents the insured, and the underwriter, who represents the insurer’s capital.
The broker compiles the slip, packages the supporting technical and financial information, and presents the risk to the market in a way that secures the best available terms for their client. Brokers are paid through brokerage, a percentage of the premium built into the cost of the placement. Lloyd’s regulates this closely; brokerage within the usual range for a class of business is accepted, but Lloyd’s guidance warns that additional fees or profit commissions paid by insurers to brokers raise serious concerns about conflicts of interest and potential violations of anti-bribery rules.1Lloyd’s. Distribution Costs Broker Remuneration and Additional Charges
The underwriter evaluates the probability and severity of loss, decides whether the proposed premium compensates adequately for the exposure, and then accepts, rejects, or counters with different terms. When an underwriter commits, they record the percentage their syndicate or company will absorb. Once initialed on the slip, that commitment is legally binding for their proportional share.
How a Placement Actually Runs
The broker starts by approaching a lead underwriter, chosen for expertise in the relevant risk class and the capacity to take a meaningful share of the line. This first meeting is the most consequential step in the whole process. The lead will interrogate the risk in detail, pressing the broker on loss history, engineering reports, contractual arrangements, and anything else that affects the exposure.
If the lead agrees, they negotiate final terms, set the premium rate, record their percentage commitment, and initial the document. That is more than a formality. The lead’s stamp and terms set the benchmark for the rest of the market, and subsequent underwriters read the lead’s assessment as a signal of quality and pricing adequacy.
With the lead committed, the broker starts trailing the slip through the market, approaching further underwriters to fill the remaining capacity. The slip now shows the lead’s terms and commitment. Following underwriters often rely heavily on the lead’s judgment, particularly for complex risks where independent analysis would be expensive and slow. They can negotiate different terms or decline, but most follow the lead’s pricing and simply decide how large a line they want to write.
The negotiation is often iterative. If the market pushes back on the premium, the broker may return to the lead to agree adjusted terms and then circle back to carriers who had already committed. Each underwriter who accepts records their line percentage and initials the slip. The broker continues until the total committed lines reach 100% of the required capacity.
Written Lines, Signed Lines, and Signing Down
In practice, the total lines written on a slip often add up to more than 100%. Brokers deliberately seek that oversubscription as a cushion against the possibility that an underwriter might later withdraw or reduce their commitment. When the written total exceeds the required capacity, the slip is oversubscribed.
At closing, an oversubscribed slip is signed down. Every underwriter’s written line is proportionally reduced so that the total equals exactly 100%. The reduced amounts are the signed lines; the original commitments are the written lines. An underwriter who wrote a 20% line on a slip oversubscribed at 125% would see their signed line reduced to 16%. Some underwriters can instruct that their line is “to stand,” meaning it is not reduced during signing down, but this has to be negotiated in advance.
The signed line, not the written one, determines the underwriter’s actual financial commitment and share of any claims. Experienced brokers develop an intuition for how much oversubscription to seek, balancing the need for a security cushion against underwriters’ frustration at being signed down too aggressively.
When the Risk Binds
The slip becomes a legally enforceable insurance contract once sufficient commitments are secured, creating coverage from the agreed start date. The initialed slip is proof of the contract and its terms. This is one of the features that makes the London subscription market distinctive: coverage binds before the formal policy document exists.
That arrangement creates obvious risk when the slip’s terms are sparse or ambiguous. English courts have addressed what happens when the final policy wording diverges from the slip. Where the policy is clearly intended to replace the slip, the policy terms govern. Where there is no clear intent to supersede, courts have held that both documents must be read together to determine the parties’ agreement. For brokers, the practical lesson is that a well-drafted slip with precise terms reduces the chance of disputes later.
The Duty of Fair Presentation
Before the contract forms, the insured, acting through its broker, owes the underwriting market a legal duty to present the risk honestly and completely. The obligation used to be framed as the duty of utmost good faith. The UK Insurance Act 2015 replaced that with a more structured requirement called the duty of fair presentation.2Legislation.gov.uk. Insurance Act 2015 – Section 14
A fair presentation requires disclosing every material circumstance the insured knows or ought to know, in a manner that is reasonably clear and accessible to a prudent underwriter. A circumstance is material if it would influence the judgment of a prudent insurer in deciding whether to accept the risk and on what terms. The Act identifies examples such as unusual facts about the risk and any particular concerns that motivated the insured to seek coverage.3Legislation.gov.uk. Insurance Act 2015 – Part 2, The Duty of Fair Presentation
The 2015 Act also introduced proportionate remedies for breach. Under the old regime, any failure of utmost good faith could allow the insurer to void the entire contract. Now the remedy depends on what the insurer would have done had it received a fair presentation. If it would have charged a higher premium, for example, claims may be reduced proportionally rather than denied outright. A disclosure failure on the slip can ripple through the entire panel of underwriters, which is why brokers treat the presentation stage with so much care.
How Claims Work Across Many Underwriters
When a claim arises on a subscription placement, the lead underwriter typically takes the primary role in assessing and agreeing the loss. The lead reviews documentation, negotiates settlement with the insured’s broker, and agrees the amount payable. Following underwriters then pay their proportional share of the agreed settlement.
Many subscription contracts include “follow the settlements” or “follow the leader” clauses, obligating following underwriters to accept and pay any settlement agreed by the lead, provided it falls within the policy terms and excludes gratuitous payments. English courts have confirmed these clauses operate as agreements between the following insurer and the insured, so the policyholder does not have to negotiate separately with every carrier on the slip. Without such a clause, a follower could dispute the settlement and force the insured into multiple separate negotiations.
The policyholder’s broker manages claims collection, making sure each underwriter pays their signed-line share on time. On a slip with 15 underwriters, that coordination is not trivial, and it is one reason the London market has invested heavily in electronic systems for post-bind processing.
From Slip to Market Reform Contract
After the risk binds, the administrative work shifts to producing the final policy document, standardized in the London market as the Market Reform Contract. The MRC is the contract standard for open market insurance and reinsurance business placed by London market brokers.4London Market Group. Market Reform Contract It formalizes the terms recorded on the slip and incorporates the specific clauses, warranties, and conditions the underwriters agreed to. The MRC must be produced accurately and distributed to all participating carriers for their records and claims processing.
Electronic Placement
The image of a broker physically carrying a paper slip around the Lloyd’s underwriting room has largely given way to electronic placement. Placing Platform Limited, known as PPL, is the London market’s primary digital platform for placing insurance and reinsurance risks, with over 400 firms using it to connect brokers and underwriters electronically.5Placing Platform Limited. Placing Platform Limited – Home
Lloyd’s issued an electronic placement mandate in 2018, requiring syndicates to place increasing percentages of their business digitally. Adoption for in-scope business exceeded 90%, at which point Lloyd’s discontinued the formal mandate on the basis that electronic placement had become the market’s default operating mode.6Lloyd’s. Electronic Placement Digital systems now handle presentation of the slip, underwriter assessment and commitment, and the generation and storage of the MRC in shared electronic repositories. The core mechanics of the slip deal are unchanged. The cycle time from first presentation to binding has compressed dramatically.