You usually start in the middle and work out towards the edges. This does require more cuts as both ends usually need to be cut. I assume you are talking behind the bath? Another option is to start with a full tile in the innermost corner and work out. Get the dimesions of the bath and work it out with the size of your tiles. Your tiler should have some ideas but don't let them take the easy way out. You have to like the finished job and live with it. If there is not an obvious way to go then sometimes it is down to individual preference. If you use the factory edge in the corner then you know it is straight.

Something’s happened to this app which is making it harder to use. You can add a photo in the comments section but you must add some form of text as it won’t work on its own! You can only share photos one by one, so click the landscape icon below, pick a phone then upload, then click on icon again, one by one. Such a pallava. I’ve never known an app like it!

Ultimately it depends on your budget. If there is nothing wrong with the white tiles, you can certainly leave them, but if you’re replacing pretty much everything else, you might regret not replacing them at the same time. Browsing photos of Houzz, having the shower end of a bath as a feature wall seems to be old fashioned now. It would be more modern to have all three walls the same tile. I would also take the opportunity to make a niche (if there is space behind a wall) so that you can put shampoo bottles somewhere and not around the edge of the bath. It was the best thing I did for my bathroom! You should also be prepared to replace the floor. It’s hard to imagine that the floor won’t be damaged when the sink comes out or that there won’t be gaps if the replacement is a different shape or size.

Hi Sarah L, thanks for your reply and for putting me right about wainscoting - should've checked the Google source :) Yes, it would only be for the one short wall. And I do like, and did consider, panelling but I want this room to be tiled. I laid out my tile samples behind the bath this afternoon and quite liked it, so am pleased you like the idea too.