Stockpot, the traditional British London-based restaurant chain, has acquired it fourth site. The privately owned group has acquired a new 25-year lease on the former Il Sorriso restaurant in Charlotte Street, W1. Representing the landlord MastCraft, Cedar Dean Gilmarc brokered the deal. Stockpot also has sites on the Kings Road, Panton Street and Old Compton Street. It also operates Stock 58 an A1 spin-off sister concept.