A sole trader and their business are the same legal person, and that single fact shapes every insurance decision that follows. There is no company to absorb a claim, no separate balance sheet and no limited liability; a judgment against the business is a judgment against you. Sole trader insurance is the set of covers that puts something between a claim and your own money, and the right set is smaller and cheaper than most people expect.
The cover that does the heavy lifting
Public liability is the first policy almost every sole trader buys, because it answers for injury to other people and damage to their property, and because customers and clients ask for it. If you advise rather than make or fix, professional indemnity matters more, since the loss a client suffers from bad advice is financial rather than physical. Most sole traders need one of these two clearly and sometimes both, and the honest way to decide is to ask what a dissatisfied customer would actually be claiming for.
What the law requires of a sole trader
Almost nothing, until you employ somebody. Employers' liability becomes compulsory under the 1969 Act as soon as there are employees, and that includes part time and casual staff. Motor insurance is compulsory for any vehicle used on the road, and a van used for business needs business use on the policy rather than social and domestic. Beyond those two, a sole trader's insurance is decided by contracts and common sense rather than by statute.
Your own things are a separate question
Liability policies protect other people. Your tools, laptop, stock, camera or equipment need their own section, and it is usually rated on a declared value with a limit for any one item. Sole traders frequently assume a home contents policy will cover equipment used for work; it usually excludes business use, and the exclusion is discovered after the theft rather than before. Working from home is itself worth telling the household insurer about.
Reading a package quote
Sole trader policies are sold as packages, and the headline price attaches to a particular combination: a limit, an excess, a declared turnover and a trade description. Two quotes that look different are often quoting different things. The useful comparison is section by section, and the printed starting prices in the record on this site are a floor for the liability half rather than a prediction of any particular quote.
Questions people ask about sole trader insurance
What insurance does a sole trader need in the UK?
Public liability if customers, clients or the public are exposed to your work; professional indemnity if people rely on your advice; employers' liability, which is compulsory, if you employ anybody; equipment or tools cover for the things you earn with; and business use on your vehicle insurance if you drive for work.
Is insurance a legal requirement for a sole trader?
Only employers' liability, and only with employees, plus the usual motor insurance duty for any vehicle used on the road. Everything else is a commercial decision, though many customers and licences make public liability a practical requirement.
Does a sole trader need insurance with no employees?
There is no legal duty to insure without employees, but the exposure is larger, not smaller: with no company between you and a claim, an uninsured judgment reaches your personal assets. That is the argument for public liability even when nobody has asked for it.
Is sole trader insurance cheaper than company insurance?
Often slightly, because the employers' liability section is usually absent and turnover is smaller. The structure of the business matters less to an underwriter than the trade, the turnover, the staff and the limit chosen.