Yeah the place that was holding it for me is also a gunsmith (seems very experienced) and said he can get me the bolt when I get to that stage, he reckons he has seen some in worse condition as well. Some screws come out with elbow grease while others ill have a crack at every day and keep oiling till they budge. I will be borrowing an impact screw driver i think for some of them.
The magazine i can't get out, I have opened the magazine release and oiled the space around the magazine with lots of elbow grease but i cant get it to budge, i think its due to it being held in place still as you can see in the bottom left where the catch is rusted onto the magazine.
http://i.imgur.com/fdLqrhs.jpg
Should I try and sheer it free between the magazine and trigger?