Well firstly thanks for all the help people. I changed the belt tonight I ordered one last night from camskill and rsvrob (yoda) had one ready for his engine so I had his and when mine turns up I'll give it him cheers mate.
What should have been quite painless actually turned into a 3 and half hour ordeal.
Old belt gone new belt over most the pulleys tried getting the tensioner tensioned with rachet and didn't work so thought I would wind it right back pop a pin in the hole belt on knock the pin out self tensions job done....... No
As I had the ratchet in and turning it to line the holes up the blasted hole where the ratchet goes decides to snap so off had to come the tensioner and back over to robs to use his vice to reset the tensioner and put the pin in it, back to mine put on the car line the belt up and should give a few hits screw breaks and all tensed up......... No this screw didn't wanna budge couldn't find the hack saw to cut it either so I just persevered and eventually screw comes out and job done, would recommend a nail to anyone in the future as you can just grip twist and pull
All done though. As for the aircon pump pulley well it's fooked the bearings have collapsed so the pulley moves in every direction and rattles now so that needs to come off ASAP so I'll get the gases out and get that off soon