Check 2 and 3: What the 280% + 235 Free Spins Requires
The headline is a 280% match with 235 free spins. Two numbers underneath it decide whether it is worth claiming.
The multiple. 35x applies to the bonus amount, not to your deposit. Deposit £20, receive £56 in bonus funds, and £1,960 must be staked before any of it converts. Spread over small spins that is a long session; chased at high stakes it is not.
The maximum bet. A per-spin ceiling applies for as long as the requirement is open, and exceeding it can void the bonus and everything won from it. This is the term most people break, because it is easy to raise your stake after a good win without remembering the condition is still live.
The 235 spins arrive in batches and their winnings carry the same 35x. If your intention is to deposit, play briefly and withdraw, decline the offer — there is no penalty for playing with your own money, and no requirement to clear.