I have attached some pics of the tool I used to get to the bolt, I have not managed to undo it as yet, just crack it, I need a ratcheting deep socket if such a thing exists, or a deep ratcheting spanner. Flexible ones are useless for this job.
The only usable access point is also shown, as is the location of the bolt from underneath the car.
The underneath of the compressor is also the best way to get tools to the rear bolt, but it is very limited with the engine mount centimetres from the compressor.
Day 7 and the bolt is still not out