One of the more prolific hotel groups, the Mandarin Oriental now boasts a second London site – not too far away from the other one. The new hotel is on Hanover Square, Mayfair’s oldest square, which is just under a 30 minute walk from the Hyde Park location. Unlike the first, however, the new Mandarin Oriental is housed inside a new build and offers a more intimate experience, with only 50 guest rooms (as opposed to 168 at Hyde Park) and 78 private residencies. There are also restaurants and a lounge by Michelin-starred chef Akira Back, a destination spa and large indoor swimming pool.