Vaughan Green at Custom, classic and retro. he's brilliant and a lovely chap https://www.customclassicretrotrim.co.uk/
Make sure you see them in the flesh. Someone years ago at Techenders had a £9k+ interior which looked great from 20 feet away......
I did mine, it’s very good. Unfortunately I don’t do it commercially. Are you thinking units or upholstery or both?
Just take a wander through their website. Some of their stuff is lovely. I bet it’s hideously expensive though for that level of detailing.
When Vaughan did mine he was no more expensive than Bromsgrove - and he’d already done campervan crisis by then!
I have fit one of these in a T5, it was ok, you can get all the appliances on the same pallet as well, as I remember the bloke who ordered it says they will do a deal. https://www.evomotiondesign.co.uk/product/t2-bay-window-flat-pack/
I’ve got a Howdens account if you wish to put an adequate quality kitchen in. Maybe pan drawers for the bed
Just saw you want the upholstery done. We had ours retrimmed by a reasonably priced chap in in The midlands.
Delilahs - just had mine done. Lizzie and Daz are awesome, and the service and quality of the work they did is THE BEST of anyone I've used for ANYTHING in 15 years of ownership of my bus.....mike drop..... Seriously, they are awesome. Gerry