Update! :
Managed to get the alternator bolts out with lots of swearing, bumps, bangs, more swearing with a bit of screaming this time and lots and lots of WD-40!
To get the bolts out you need as small a socket as you can get in 14mm, simply cos the space is so restrictive
However with the bolts off the alternator is still stuck, it rocks backwards and forwards on the bottom bracket, i can't seem to get it off even though the bolts are removed... am i missing something, can some help me?
Also does anyone know how to take of the round plastic connectors that hold to together the black plastic cover that stops to much water splashing into the engine bay? I can't seem to figure them out and it would be easier to work in there with that thing out the way!