Category: Lloyd's market · Reviewed by Tim Roche, Director · PI & Commercial · Last reviewed 2026-06-05
The box at Lloyd’s is the designated underwriting desk on the Lloyd’s underwriting floor at which an underwriter or team meets placing brokers to discuss and bind insurance and reinsurance business. Each box is assigned to a particular syndicate and class of business, with the boxes organised by floor and pillar within the Lloyd’s building at One Lime Street.
Category: Lloyd’s market Also known as: the box, underwriting box Related concepts: Lloyd’s Underwriter, Lloyd’s slip, Lloyd’s of London
The box is the physical and conceptual centre of Lloyd’s underwriting. Each box is a high desk (the term derives from the traditional ‘pew’ arrangement, in which clerks sat at a high writing surface) at which the underwriter sits, supported by junior underwriters, technicians and class specialists. Placing brokers visit the box, often making ‘box-walks’ from one syndicate to another to obtain quotes for the same risk and to assemble a placement.
The Lloyd’s building at One Lime Street is organised into named pillars and floors, with each box having a fixed location. Underwriters are at their boxes from approximately 10am to 4pm on a typical underwriting day, with most face-to-face placement taking place during these hours.
The box has no separate legal or regulatory status. It is the operational location at which Lloyd’s underwriters meet brokers; the underlying contractual framework is the slip or Market Reform Contract signed at the box.
Modern Lloyd’s underwriting combines the traditional box-based face-to-face model with electronic placement via PPL (Placing Platform Limited). For complex placements (large industrial property, specialty risks, complex reinsurance), face-to-face negotiation at the box remains the dominant model. For more commoditised placements (binders, small commercial business), electronic placement is increasingly used.
The ‘subscription market’ model — where multiple syndicates participate in a single placement, with a lead underwriter setting terms followed by following syndicates writing their lines — is enabled by the box system. Brokers move from box to box assembling the placement, often referring back to the lead for variations agreed by following syndicates.
For Apex clients, complex commercial placements (industrial property over £30m sum insured, specialty risks) are typically placed by face-to-face negotiation at the box with the lead syndicate.
An illustrative example: an Apex broker submits a £45m industrial property risk to a lead syndicate at their property box on the second floor of the Lloyd’s building. The lead underwriter agrees terms and signs a 20 per cent line on the slip. The broker then walks the slip around following boxes — five other property syndicates and three company market reinsurers — until 100 per cent of the risk is placed.
This entry is part of the Apex Insurance Wiki. Last reviewed by Matt Bartlett on 2026-06-05. Next review: 2026-12-05.
Apex Insurance Brokers Limited. Authorised and regulated by the Financial Conduct Authority, FRN 724952. Registered in England and Wales, Companies House 07014570. This entry provides general information about UK insurance concepts and is not regulated advice. Consult your insurance broker on your specific position.
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