United Combat Alliance, an online gaming militaristic-rank clan that plays under NovaLogic and Valve titles.
Formed in 2004.
United Combat Alliance - Private - Adam
University College Application Service, or something like that. Basically a service that allows you to apply for universities that is so incredibley long winded and complex that you loose the will to live as one uni after another rejects you.
"You have been rejected from <insert univeristy name here>. Better luck next year!"
Phil: Whats up Steven?
Steven: Oh, not much. I was just pwned by UCA again.
A form. Not to be confused with the bionic, even though it does cost £6M maaaaan, understaaaaand? Me neither.
"John Evans please sign for your UCAS form again" - Noddy Holder