UCAS operates a clearing process in August and September to assist those candidates who have been unable to gain places through the standard procedure, to find an educational place on university and college courses which are not full.
To be eligible to join the clearing process, you must have:
applied through UCAS in the normal way, but have not received any offers, or
received offers through the usual procedure, but have not met the conditions to be accepted, or
applied to UCAS after June (in which case you will automatically be sent a Clearing entry form).