cockroaches,
No matter which of your choices you ultimately decide - you will need money. Go the university route you will no doubt get an overdraft and be be tied to your student loan. Go CTC and the you get the bond.
If the money worries you and you don't want to go to uni, think about taking time out to earn some, then approach CTC with a little tucked away. I see you're only 18 - there's no rush, and it may give you time to develop yourself to make you more attractive to CTC, demonstrate interest by working in the industry perhaps?
Good to see a young'un considering finances though....
All the best,