Well what do you mean by "Traditional" UK label? i was always under the impression there wasnt really one. I mean on one spectrum you have the drapey A&S and on the other the military structure of Huntsman and the like. Im assuming you mean Structure and very clean looking, double vents, and waisted? If so Besides the color of the linings in most paul smith is not bad (always been my idea of a modern British cut on some models). Not sure if Kilgour still does RTW, Gieves and Hawkes like the poster above mentioned, also i think some of the other savile row houses carry some RTW. Your best bet is to look around and see which brand fits your the best then maybe try finding them online, its very hard to just narrow it down to a "Traditional" UK or a "Traditional" Italian etc because within the different countries there are so many looks. For example, Belvest, Isaia, Attolini, Brioni, Kiton, Davenza(sp?) Lavera, Zegna, Saintandrea etc are all from italy but all look different from one another.