Sky insurance are really good for imports, although for anyone looking for insurance with them im pretty certain you have to be over 25 for fully comp (not that it will bother your mum's partner at 60).
Ive tried to steer clear of Adrian Flux after a few bad reports but also Chris Knott are meant to be good too.
Didn't think FTO's would be that much insure at 60 and probably a fair few years NCB.