[mnahkies]

Are you sure? I never make bets over £20 or so, but my understanding is if I hit it big there's no tax to worry about - this source seems to agree, unless you're a professional gambler which somewhat makes sense https://intelligentodds.com/gambling/do-you-pay-tax-on-gambl...

[robotresearcher]

According to that link, it changed in 2001. I left the uk before that. Now I feel very old.

Thanks for the correction.