So, the bathroom fitter came round today and started removing the last of the tiles and suite I’d given up on. By the end of day 1 most, but not all of the tiles were off and the suite was out. I took some solace at least that even a professional with power tools had been defeated after a day’s hard labour. Looks like someone welded the tiles in the shower to some form of waterproof board as they were just not coming off. Rather him than I!