This will depend on the specific sportsbook bonus you are attempting to qualify for. It would be logical for a £5 deposit to then be enough for a qualifying bet at the 5 pound deposit betting sites however this is not always the case. With all Free bet offers T&Cs apply and in some cases to unlock your Welcome bonus only deposits and bets of £10, £20, or more, qualify. If you have qualified then the Free bet is usually added on the bet settlement of the qualifying bets. Check when Free bets expire and use them before this deadline.