As above Bristan, Ideal Standard etc for brassware and china. Named brands that will have a good aftersales and it won’t be a ballache to get a shower cartridge further down the line.
Furniture – steer clear of K-Vit and anything priced around the same, it’s invariably crap. Be-Modern furniture is good for the money as is Tavistock. It’s all modular so you can tailor it to fit your space. Once past that you get into the realms of very very expensive stuff like Laufen and Duravit.
Baths – depends what you want to spend. Buy cheap and you’ll get a 6mm acrylic encapsulated one. Fine, just don’t drop anything heavy on it. Carronite ones are strong but more expensive. Ideal Standard do something called Idealcast which are quite hefty, and expensive. Look at Kaldewei or Bette for typically well made German steel baths.
Source – used to sell this stuff for a living.