I ordered another chip yesterday, should be here tomorrow.
I own a cheap multimeter and went over it with my grandad (I'm 17,just getting into electronics, he's been at it for years!) and we couldn't see anything out of the ordinary. Unfortunately, neither of us own a 'scope. I have been over the wiring countless times.
If the second chip works, great. If it doesn't, and it works the same, it will spur me on to fix it and get it working as then I will have two to play with!
Many thanks for your help so far
Sam