Hi,Thanks for all the help.
After getting in touch with a few different unis you're all right, I need the 5 GCSEs. The best way I've found was what Claireestelle suggested, entering in as a private candidate, It's about £130 per subject so not too pricey. I'll be doing physics, geography & English, although i think English can be done for free at local collages.
Specifically for civil engineering, with the basic 5 GCSEs I can then get onto a civil HNC course (part-time) if I get marks over 60% on the HNC I'll be able to transfer onto the BEng course... Full time Uni! Pretty doable really, anyone who wants to study and improve their knowledge can & should!
Thanks for all the help.