On 21/04/2018 09:47, TimW wrote:

a wetroom : - as recommended by many. I just baulk at the idea of
removing the boiler (which stands on the floor in the corner),
excavating the floor, digging through to sewerage outside, relaying CH
pipes (don't they have to be accessible?), rewiring someone said,
retiling the whole room...

You don't tile a wetroom. You fit 8 x 4 boards on the walls, made for
the purpose. You glue them to the walls. They have to be done after the
floor, so they overlap the flooring as it curves up the walls.

You can leave the old tiles on.

Bill