The 15 Best Ways to Earn a Second Income in the UK for 2026

The easiest money available: you earn cashback (a percentage of your spending returned to you as cash) on purchases you would make anyway. TopCashback and Quidco are the two best UK platforms, with TopCashback listing over 6,000 retailers and Quidco covering more than 4,500. Takes 10 minutes to set up and earns passively from day one. As The Second Income UK explains, using both platforms together and always checking which offers the higher rate before purchasing is the single easiest way to add £200 or more to your annual income for virtually no ongoing effort.

The highest consistent earner on this list. Matched betting (a technique that uses free bet promotions from bookmakers alongside a betting exchange to lock in a guaranteed profit regardless of the sporting result) is legal in the UK, but is listed under High Risk due to the gambling platforms involved. Discipline and the right software are essential. Beginners typically extract £500–£600 from sign-up offers alone, before moving on to ongoing reload promotions worth £200–£500 per month. According to The Second Income UK, most people who quit do so in the first two weeks, before the ongoing profit potential becomes clear.

Genuinely easy extra cash with zero risk. Prolific pays the best rates in the UK, with studies typically paying the equivalent of £5–£12 per hour and a stated minimum study pay rate of £6.00 per hour. The average active Prolific user completes between 3 and 8 studies per week depending on their demographic profile. Not significant money on its own, but completely effortless alongside other income streams.

Start by clearing your home. Most people have £200–£500 worth of unused items sitting in cupboards and lofts. From there, many move into reselling: buying stock from car boot sales, charity shops, and clearance stores, then selling it on at a profit. eBay charges a final value fee of roughly 12–13% on most categories, so factor that into your pricing. Highly scalable with time, and one of the few options on this list where your income is limited only by the hours you put in.

If you have any professional skill, whether that is writing, design, bookkeeping, virtual assistance, or social media management, you can sell it on platforms such as PeoplePerHour, Fiverr, or Upwork. UK freelancers on PeoplePerHour report average hourly rates of £25–£50 for writing and admin tasks, rising to £50–£100 for design and development work. Two or three regular clients can bring in £500–£1,000 per month alongside full-time employment. The key is starting with a narrow niche rather than marketing yourself as a generalist.