It was just the keys mentioned in my original post.
I was all ready to take my laptop to the apple shop in Birmingham today to get it fixed, had an appointment and everything to see what they could do. However, this morning its decided to work. No idea why, but it's just started working. When i had a USB device plugged in, the plug kinda went up and made a creaky sound so i don't know if this contributed to it to start working or not, all i know is that it's working again and i don't have to back all my crap up and get it carted off for repairs/a new one. Yay.
regards
--marty