Betfair's welcome offer can be turned into withdrawable cash through matched betting on an exchange, though every free bet is bet-builder style, so less of the £50 headline converts than from a standard offer.

Quidsy lists Betfair for that route, not as a recommendation to bet for entertainment. The two stages are different. The £10 qualifying bet is the low-risk part when done correctly, because you cover it on the exchange and the result stops mattering. The free bets are a conversion question, and this is where Betfair is awkward: bet builder, accumulator and multiple free bets cannot be covered cleanly, so you keep noticeably less of their face value than you would from standard singles. If covering bets on an exchange is new to you, use the step-by-step guide before placing anything; if betting could pull you into chasing losses, skip this offer.