It is more than just a hole. The edges are rolled inward. Your best bet is to find a donor at a junk yard and cut out the section that you need and cut out your mess and weld in the new piece. I have done this twice and it wasn't too difficult.
I just now noticed that you are in England (you don't type funny like y'all talk, LOL). I am guessing that you don't have a lot of donors there. You might post in the parts wanted section.

Last edited by 52Carl; 11/12/2013 2:15 AM.

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission