They are shown on a profit and loss account for a specific period of time (normally one year).
About Anita Forrest
Anita Forrest is a Chartered Accountant, spreadsheet geek, money nerd and creator of www.goselfemployed.co - a website full of templates, guides and resources for UK sole traders. No faff. No confusion. Just simple straightforward advice on business registration, taxes and bookkeeping.