The Best Contemporary watch collection in Mayfair. Official Watches is a prominent reseller of luxury watches in the UK, offering a wide selection of Vintage, Pre-Owned, and Unworn timepieces. You can Buy, Sell or Part-Exchange with us. On site Watch Servicing and Repair Centre. Situated in London’s prestigious Mayfair district at 6 Duke Street. Over 17 years experience in the industry. Setting ourselves apart from the rest, we are among the few distinguished watch resellers that boast a trusted physical store as well as a well-established online presence.