Rear quarter panel replacement

Hi all

I could with replacing the rear quarter panel on my mk1 as it is pretty full of filler. How big a job would this be? I can use a welder but I am guessing it is beyond my ability….

If this is beyond the scope of a home mechanic can someone recommend a bodyshop round about Wallingford, Oxfordshire that would be able to do it?

Definitely not a DIY job. I would yellow pages it and get some quotes, assuming you can get a replacement panel? Beevers or german ebay maybe?