The issue here is volume 150000 units a year is not viable for mass car production, the plant at Swindon has never realised its full production level the same goes for Toyota at Derby to be fair the basic civic costs £18,250 or thereabouts and the new Corolla to replace the Auris costs around £20000.
Most people who buy or lease new cars and keep them for a relatively short period can get a comparable model from any number of manufactures for far less the only Japanese manufacturer who has sold in large numbers in Europe is Nissan who are now owned by Renault which has helped them become reasonable value for money.