You will find Meshkati and the centre’s pioneering hair-loss expertise in a grand, Georgian building filled with contemporary art, a minute’s stroll from Hyde Park. Their signature Nanoprocedure is a non-invasive way to restore hair (DNA-Matched strands are distributed across the scalp, resulting in instantly thicker-looking hair) to surgical options such as Follicular Unit Extraction (FUE – it involves transferring healthy follicles, under local anaesthetic, from areas of dense growth to areas of sparseness). Leading hair specialist Amy Meshkati performs treatments (some taking up to 20 hours), while the charming Celine ensures that everything runs like clockwork. Royalty, heads of state and movie stars are in their books, but you would never know – secrecy is paramount here.

At 10 Grosvenor Place, SW1 (020 7823 2020; meshkati.co.uk).