Business Insurance in Trowbridge: Cover Built for Wiltshire's County Town

Reviewed by Matthew Bartlett, Director, Apex Insurance Brokers Limited · Last reviewed 2026-08-08

Trowbridge is an unusual mix. It is Wiltshire's county town, which brings public-sector work, professional services and the steady footfall of an administrative centre. But it is also, at heart, a mill town: the woollen cloth trade built it, and the stone mill blocks and weaving sheds that industry left behind are still standing — many of them converted into the offices, studios, workshops, gyms and flats that today's businesses occupy. If you run a business here, there is a fair chance your premises, your customers or your contracts trace back to one of those two facts. Your insurance should trace back to them too.

Why a former woollen mill wrecks a guessed buildings sum insured

The single most common problem we see with older industrial stock like Trowbridge's is underinsurance on buildings. A converted mill or Victorian commercial building is not priced to rebuild the way a modern steel-and-blockwork unit is. Solid stone walls, timber floors, original roof structures and period detailing all push reinstatement costs well above what the market value of the building — or a rough guess — would suggest. Where a building is listed or sits in a conservation area, the gap widens further: reinstatement may have to use matching materials and traditional methods, with conservation input and longer build times on top.

If your declared value is too low, most commercial policies apply average — the insurer scales your claim payment down in proportion to the underinsurance, even on partial losses. A proper reinstatement figure, including demolition, debris removal and professional fees, is the fix, and for heritage stock it is worth getting a formal reinstatement cost assessment rather than indexing an old number forever.

If you are a tenant in a converted mill unit, check the lease before assuming anything. Establish who insures the structure, whether you are obliged to contribute to the landlord's premium, and — crucially — make sure your own tenant's improvements and fit-out are insured separately, because the landlord's buildings policy usually will not cover them.

Does county-town work change the liability cover you need?

Trowbridge's role as Wiltshire's county town shapes its economy: local government, the professional firms that cluster around it, and the contractors and suppliers who serve both. That matters for insurance in one specific way — contract terms. Public-sector tenders and larger commercial contracts routinely specify minimum public liability limits, often £5m or £10m, and consultants and advisers bidding for that work will usually be asked to evidence professional indemnity cover as well. If your standard £1m or £2m public liability limit is what is on file, you can find yourself scrambling to increase it mid-tender.

Two points of law worth being clear on. Employers' liability insurance is a legal requirement for almost any business with staff — including part-timers, apprentices and, in many cases, labour-only subcontractors — under the Employers' Liability (Compulsory Insurance) Act 1969. Public liability, by contrast, is not required by any statute. It is contracts, landlords, licensing bodies and plain commercial sense that make it effectively essential, particularly if the public, clients or council officers ever set foot on your premises or you work on anyone else's.

Water, old buildings and business interruption

Low-lying premises near a watercourse should treat flood as a live question rather than a footnote. Insurers increasingly handle flood exposure through higher excesses or specific terms rather than blanket refusal, so the details of your quote matter: check what the flood excess actually is, and whether flood is covered at all before you rely on it.

Old buildings also fail from the inside. Aged plumbing, timber floors and concealed voids make escape of water a persistent claim source in converted heritage stock — and a slow leak through three floors of a mill conversion is an expensive event. Whatever the cause, the underrated cover here is business interruption. Ask yourself honestly how long it would take to repair, refit and reopen a period building where consents and matching materials are involved. Twelve months of indemnity is often optimistic for heritage premises; 24 or 36 months is frequently the more realistic setting, and it is one of the cheapest under-corrections in commercial insurance.

Trades based in Trowbridge, working well beyond it

Plenty of Trowbridge businesses do their actual work elsewhere — builders, carpenters, electricians and other trades serving west Wiltshire and the wider region, with the town's older housing and commercial stock generating a steady flow of renovation, repair and conversion work. Heritage work cuts both ways for a tradesperson: it is good business, but working on listed or period buildings raises the stakes if something goes wrong, and it is worth confirming your public liability policy does not exclude heat work or restrict work on listed structures.

Beyond liability, the everyday risks are tools and vehicles. Overnight theft from vans remains the classic tradesman's claim, so check whether your tools cover applies overnight, whether it requires forcible entry, and what the single-item limits are. If you take on larger jobs, contract works cover picks up the value of the work in progress itself — something neither liability nor tools cover touches. We cover the trade-specific detail on our national pages for builders and carpenters.

How Apex arranges cover for Trowbridge businesses

Apex Insurance Brokers Limited is an independent, FCA-authorised broker based in Bristol, arranging commercial insurance for clients across the UK — including plenty in Wiltshire. We do not have an office in Trowbridge, and we will not pretend otherwise; what we offer is a broker who asks the right questions about your actual building, your actual contracts and your actual downtime risk, then places the cover accordingly. For a fuller picture of the commercial covers we arrange, see our commercial insurance page.

Apex Insurance Brokers Limited is authorised and regulated by the Financial Conduct Authority (FRN 724952). This article is general information, not advice on a specific policy.