Selfridges – probably the best single store in the UK. They have outlets in Manchester, Birmingham & the flagship store in London Oxford Street. Unfortunately you cannot buy online.
g.room – an online store and a shop in Carnaby Street, London. They sell a wide range of products: from Ozwald Boateng shirts & ties to J.Fold wallets to the aftershave James Bond wears. An ideal shop to buy gifts from.
Hopefully this will be a useful resource for the well dressed young gadabout.