The short answer: usually not
Game show and quiz show winnings are not normally taxed in the UK. If you appear on a show and win cash or a prize, HMRC treats it as a one-off windfall, not as income from work. For almost everyone who appears as a one-off contestant, the winnings are tax-free and you keep the full amount, in exactly the same way that competition winnings are tax-free.
Why game show winnings are tax-free
Under UK tax law, money won from games, competitions, and betting is not treated as earned income. It is not a salary, it is not a trade, and it is not an investment return, so income tax and National Insurance do not apply. The same principle that makes lottery and competition winnings tax-free applies to quiz and game show prizes. Whether you win a few hundred pounds or a six-figure jackpot, the prize itself is yours in full.
What is covered
- Cash won on television or radio quiz and game shows: tax-free.
- Physical prizes such as cars, holidays, and tech won on shows: tax-free on the full prize value.
- Phone-in and text-to-enter competition prizes run by broadcasters: tax-free.
- Studio audience prizes and online game show winnings: tax-free.
The one exception: professionals
There is a single situation where game show or quiz winnings can be taxable: if winning is genuinely part of your trade or profession. A casual contestant on a show such as Who Wants to Be a Millionaire or The Chase keeps the lot. If, however, your winnings are tied to your job, or you compete so regularly that HMRC views it as organised income, the position can change. This is rare and does not apply to ordinary contestants.
What about very large wins?
The amount does not change the tax treatment. A large jackpot is treated the same way as a small prize, which is to say there is no tax on the winning itself. The only tax that can arise is on what you do with the money afterwards. If you put a large cash prize in a savings account, the interest it earns may be taxable under your personal savings allowance, and if you invest it, normal rules apply to the returns. The prize is tax-free; the income it later generates is not always. A very large cash prize can also affect means-tested benefits such as Universal Credit, which is a separate question from tax.
Do you need to declare game show winnings?
No. You do not need to report quiz or game show winnings on a self-assessment tax return, because HMRC does not treat them as taxable income. If you win frequently or at high value, it is sensible to keep a record, such as the winner email or a letter from the production company, in case your bank ever queries a large deposit.
Keep a simple record
Even though there is no tax to pay, keep proof of where a large win came from. A confirmation email or letter makes it easy to explain a deposit to your bank and saves any hassle later.
How this applies to online competitions
The same tax treatment covers online prize competitions, not just television. On Odds Up, every prize is paid tax-free, whether it is cash by bank transfer or a physical prize by tracked courier. You keep the full value, exactly as you would with a game show win, and your odds are shown before you enter.