The answer to such a question is that it depends entirely on the sports betting site in question. For example, some sportsbooks will have a minimum deposit of £5, but in order to claim the bonus that is on offer, you will be required to place a qualifying bet of at least £10, meaning that you cannot claim the bonus with the minimum deposit. On the other hand, some bookies will allow a minimum deposit of five and a qualifying bet of £5 to claim the bonus on offer, so in this case you can claim the bonus with the minimum deposit.