Bloody hell, mate - noone's going to reject you/cancel your UKCAT because your middle name is on your passport and not on your UKCAT! Relax and concentrate on passing the test!
r u guys sure? i just phoned them and they said it is required
It's best to contact them and really make sure. They do want the exact same name on your UKCAT registration and your ID...anyways, can't you just insert your middle name now?