All done now mate, it was the passenger headlight I had replaced.
The bill was as follows:
Headlight £65
Brake Pad £25
CV Joint £15
2 Tyres £90
Total: £195 + £160 labour +£45 for the actual MOT
Grand Total was £462. It's all done now and I need not worry for a while. But I'm gunna learn how to do some of the simpler stuff myself so if stuff like this happens again maybe I can do some of it instead.