If the situation is beyond your control the best thing you can do, I think, is spend the next several years working and flying at the same time.
You want to work and then do your PPL and then go back to work and save 10K and get 20K off the bank to pay for CPL/IR/MCC and Instructors rating. Don't know if this is the best way.
You may struggle to borrow the money as the banks are very strict on loans of that size. Unless you can get your parents to remortage their house you may struggle as the banks will consider you a bad risk as you only have GCSE's and AS Levels and should you not get a pilots job you will struggle to pay the loan back.
If your parents can re-mortage their house do you want that on your back.
Perhaps the best option is to get yourself a reasonable job where you can work your way up and stick with it (rather than temping / flying / temping etc and never getting a big pay increase) and use all your holidays and weekends to fly. Have one account for weekend flying (so never much money in)and an account like an ISA where you pay money in all year and never touch it so at the end of the year you can use that to pay for your night / distance learing etc. Most importantly develop an ability to live without a social life! It won't be easy and without a solid education behind you it will take you longer to save the money (as you won't be as well paid not because you can't count or anything) but you sound commited and thats half the battle.
Good luck.
Edited to remove some waffle!
[ 23 July 2001: Message edited by: Capt Wannabee ]