You can go to a carpet store, pick out a carpet and have it made into a rug with bound edges. Also, in some carpet stores/furniture stores you can order a rug in a specific size. Worth looking around for that.

On Aliexpress the diameter given is of the overall diameter, here is a deep tone chime set on their site; https://www.aliexpress.com/item/33inch-Hanging-Wind-Chime-Large-Deep-Tone-Resonant-Wind-Chimes-Church-Bell-Outdoor-Garden-Yard-Home/32975926622.html?spm=2114.search0104.3.29.4c3c26462ghPcr&ws_ab_test=searchweb0_0,searchweb201602_10_10065_10068_10547_319_10891_317_10548_10696_10084_453_454_10083_10618_10307_10820_10821_10301_10303_537_536_10902_10059_10884_10887_321_322_10103,searchweb201603_6,ppcSwitch_0amp;algo_expid=e37168ed-1610-4a32-ab42-8738116496b1-4&algo_pvid=e37168ed-1610-4a32-ab42-8738116496b1 Excuse the huge link.

Obobble and Suzanne C, thanks for the comments. I think the idea of putting the shower and toilet along the right hand wall is a good idea. Do you think there would be room if I put the vanity unit parallel on the opposite left hand wall, rather than underneath the window? (Sorry I like the idea of having a mirror in front of me rather than the window obobble!) Also what do people think are comfortable dimensions for a spacious walk in shower? If I put the shower in the back right hand corner then I’m not tied so much by the width of the window I think as it won’t jut up next to it? Ie it could be wider that 76.5cm?

​I have a 1400 x 800 shower, was going for walk in but bathroom fitter advised against it. We have a sliding door, easy clean, expensive one. I am glad i didn't go for the walk in because honestly 1400 is too small. Why not go for 1600 with a walk in, or 1400 with sliding door. By the way the small gap can he easily sorted by your tilers. They'll make recommendations when they come n to quote. Such a common problem for them to solve. I'll try to attach a pic of my showerso hopefully you'll see that 1400 ight be too small for a walk in.