A no-deposit bonus is a small amount of bonus money or a few free spins credited when you register, without a deposit. It lets you try a site's games with its money rather than your own.
The terms are usually tight. Expect a cap on what you can withdraw from it, a short expiry, a limited list of eligible games, and a wagering requirement, capped at 10x on GB-licensed casino bonuses since 19 January 2026. Some sites also require a deposit before any winnings can be withdrawn, to complete payment checks.
You still have to pass age and identity verification before playing, as with any GB-licensed account. No-deposit offers are a marketing cost for the casino, not free money; the realistic value is small. See bonus rules.