There are a few excellent UK-made brands out there, although it's on the expensive side it's definitely quality stuff that lasts : Mackintosh, Drake's, Barbour (depending on the price range), Sunspel, Private White V.C., John Smedley, Colhay's etc. I'm personally a huge fan of S.E.H Kelly.

And of course there are still the venerable shoe makers of Northampshire which in my opinion remain the best industrial ready-to-wear shoemaking in the world (with a few exceptions, namely Carmina and J.M. Weston) : Edward Green, Crockett & Jones, Cheaney, Church's, Grenson etc. I'm myself a regular Crockett & Jones customer as they make the only size + width combination I've found in ready-to-wear that matches my feet really well.

Of course it's a rather militant way of looking at clothing and it's all pretty expensive stuff but :

- Frankly it's affordable if you've got an engineer's comp.

- It keeps its value well on the second-hand market.