Do you know of any catch wresling gym/instructers in the Manchester/NorthWest?

My boyfriend has been looking for a grappling based martial art for a while but is struggling to find one which suits him as he has a walking disability which means he cant stand for long periods and his lower limb flexibility is parity poor. He has tried bjj in the past but found the amount of leg use in it was too much and felt like he was wasting his time because he couldn't do half of what the class was doing....been told catch wrestling techniques are more upper body base is this true? would you advise more private tuition 1st and where/who do people think would be best??