I’ve designed and sold fitted bedrooms for Hammonds and Betta Bedrooms for several years and I still can’t understand why their prices are so high! Maybe it’s because seemingly normal people are prepared to pay on average £3000 for some MDF or chipboard covered in vinyl. There’s nothing inherently wrong with them, and I know all of my hundreds of customers were and are satisfied but I wouldn’t have them myself. Solid wood is the only right way.
Even some expensive oak veneers are reconstituted from wood pulp.
But I can’t help the OP – I’ve no idea where you can get good solid furniture from. I’d start with a local quality timber merchant and see if there’s an old bloke they know who can make some for you.