There’s not a huge amount of places you can get stuff off the rack, but try:

• Drake’s

• Paul Stuart

• Buck Mason

• The Armoury

• J Press

• No Man Walks Alone (NYC and great, but they don’t have a store per se)

If you’re open to made-to-measure, look at:

• P Johnson

• J Mueser

• Proper Cloth

• Mr Ned

• J Press pennant (their less expensive MTM line)

Honestly though your best bet is probably going to be to order online, from somewhere like Spier and Mackay, Anglo-Italian, Natalino, Berg and Berg, Luxire etc.