I have just replaced my bathroom carpet. See before and after photos. Most carpet sellers have stopped selling this and they may discontinue making them. This carpet was laid in 2009 and apparently it can be lifted and put in a washing machine! Who knew? It does not require underlay and was stuck to tiles with some double sided tape. It would need cleaned. I have shown the measurements in feet and meters. There are cut outs for where the basin and toilet and bath were but having replaced it with a very similar Jade green carpet, I also have an off cut the size of the bath insert from the new carpet.

Used bathroom carpet, washable, + new offcut. (Dysart KY1)