What the work actually involves, what HMRC expects, and where a tool like Scoutline fits.
There's a real, unglamorous version of "make money building websites" that a lot of people in the UK — students, apprentices, anyone with a few evenings a week — actually do. It isn't building apps or chasing big brand clients. It's finding a local business with no working website (there are more of them than you'd think), building them something simple and honest, and charging for it. This guide is the straight version of how that works, not a "quit school and get rich" pitch.
Three steps, in order:
You can do all three by hand — searching listings yourself, building sites in a page builder, writing your own emails. It's slower, and most of the time in it goes on steps 1 and 2 rather than the part that actually earns money, which is the conversation with the owner in step 3.
This section is general information, not tax advice, and rules do get updated — check gov.uk directly before relying on anything here.
In broad terms, HMRC gives everyone a trading allowance — currently £1,000 of trading income a year before you're generally expected to register. Go over that from any kind of self-employed work, including building and selling websites, and you'd normally need to register for Self Assessment and declare it, with a registration deadline of 5 October following the end of the tax year you started trading in.
If you're under 18: you can typically still register with HMRC, but minors generally can't be held legally liable the way an adult sole trader can — which in practice means business insurance (public liability, professional indemnity) is often hard or impossible to get in your own name before you turn 18. A lot of people in this position either involve a parent or guardian directly, keep it informal and unpaid until they're 18, or check with gov.uk and a parent/guardian before taking on paid client work. This isn't legal advice — if you're not sure, that's the conversation to have before you take money for it.
There's no single right number — it depends on your area, the business, and what you're actually delivering. What's true generally is that a simple one-page site for a local business is a fair exchange for a modest one-off fee or a small monthly amount, not a four-figure web-agency invoice — you're competing with "nothing" and with cheap template builders, not with a branding agency.
Scoutline automates the two slowest, least interesting parts of this — finding businesses with no working website in a given area, and generating a real, ready-to-send preview site built only from that business's actual public facts (never invented services, prices, or reviews). What it doesn't do is the actual relationship: you still review every site, write the real pitch in your own words, and have the conversation with the owner yourself. See how the pipeline works or the plans if you want to see what that looks like end to end.
It's real, ordinary, unglamorous work — it takes actual effort to find good candidates and write pitches that get replies, and not every email gets answered. Treat any promise of guaranteed income from this (from us or anyone else) with the same scepticism you'd apply to any other side-income claim.