The firm, which sells 20 different varieties of hot chocolate and has sites in Knightsbridge, Covent Garden and Notting Hill, plans to open new venues in Canary Wharf, Battersea Power Station and Hampstead to take its total number of stores to 40. Knoops’ long-term plan is to open 200 sites in the UK and hundreds more overseas, with markets in Asia seen as a key target for growth.