Freelander 1 Alternator removal

I'm trying to remove the altenator on my 2003 Freelander TD4 I've loosened the compressor to get it out of the way and have removed the two bolts on the bottom of the alternator. I believe there should be three bolts but I cannot find the third one.
Can someone please let me know where the third bolt is

Thanks

Remove 13mm bolt, top left alternator, Remove 10mm bolt bottom right alternator, Follow oil filter casting to engine block, feel left and you will discover a void.This is the access for the second alt bolt, use and extension bar with a 10 mm socket put a piece of blue tack in the socket so you can withdraw it, once free. Socket just visible for guidance to upper right of on the alt body.