Today my girlfriend signed up to an online gambling site called Betfair. She put £10 onto her online account and started playing some games. Since then she managed to rack up about £35, but in order to pay it back into her bank account, she needs to prove that she's over 18. She is over 18, but in order to prove that, they want her to either send over her credit card details or a scanned copy of her passport. To me it just seems a bit dodgey. Would anyone who uses these sites be able to vouch as to whether they are legitimate, or just trying to scam people?