I thought that there might have least been a 88mm anti aircraft gun amongst that lot, but, alas no.
If there had been, to get it shipped to the UKand then deactivated so that it was legal to own in the UK would probably cost more than the gun it's self. Then there would be a problem of storage and having to extend one's garage upwards, outwards and lengthways to accommodate it. Somewhat challenging maybe also trying to think of a plausible excuse to give the neighbours as to it being there, along the lines of "It's a perfectly normal bit of kit that lots of people have in their garage."