Where do I get body armour for "hell's teeth" sized people?

Just getting back into MTBs after a 5 year break and I need to find decent body armour for Man Mountain size people.
I'm moving to Snowdonia in a couple of weeks (thus the rekindled interest) but I'm not the smallest person in the world with 17" biceps and 18" thighs and carves! To much beer, walking, swimming, weights and throwing heavy stuff around have meant it is bloomin' hard finding anything to fit. Apparently if I'm this size I am supposed to sit on my butt instead of yomping up hills and down dale. I don't mind paying for quality as long as it is worth it and beggars can't be choosers as I doubt I will be inundated with options.
Anyone any ideas?
I'm moving to Snowdonia in a couple of weeks (thus the rekindled interest) but I'm not the smallest person in the world with 17" biceps and 18" thighs and carves! To much beer, walking, swimming, weights and throwing heavy stuff around have meant it is bloomin' hard finding anything to fit. Apparently if I'm this size I am supposed to sit on my butt instead of yomping up hills and down dale. I don't mind paying for quality as long as it is worth it and beggars can't be choosers as I doubt I will be inundated with options.
Anyone any ideas?
'77 Specialized MTB
'07 Specialized Hardrock
'14 Cube Stereo HSA 140 SL Hybrid
http:www.bodgwynedd.com
'07 Specialized Hardrock
'14 Cube Stereo HSA 140 SL Hybrid
http:www.bodgwynedd.com
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http://www.lakesrider.weebly.com
'07 Specialized Hardrock
'14 Cube Stereo HSA 140 SL Hybrid
http:www.bodgwynedd.com
Why not look up at the sizing guides, maybe have a friend read the sizing guide for his size, then have him/her try them on for their size. They could maybe say whether the recommended size is good or if you should go bigger/smaller than recommended?
EDIT: The other option is to order what you think may be right, and try them on when they arrive. If it's no good send them back before you go out riding in them.
http://www.lakesrider.weebly.com
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