In recent years there has been a swing towards cubic looking and ultra modern basins. Companies like Saneux and Roca offer a good choice.
Emerging UK lines are lines such as Sanindusa also sold at Merrows as is Valadares.
A bell weather of designer sanitaryware has always been GSI and Galassia.
For people wanting to buy a well known and safe line, Ideal Standard is a good choice.
Rarely are baths made by the company as a basin, so matching is normally a matter of finding something that looks similar.