The company posted £14.7m in profits before tax in the year to 26 February compared with a £7.1m loss the previous year, accounts filed at Companies House show.
Nando’s acquired Clapham House Group, the company behind Gourmet Burger Kitchen (GBK) and The Real Greek for £30m in 2010 and sold the latter in June.
Sales across Nando’s 313 outlets, which include 53 GBK restaurants increased to £419.6m in the period from £338.8 the previous year.
Nando’s was founded in South Africa in 1987 by Fernando Duarte and Robert Brozin and has expanded worldwide through franchising. The UK arm is owned by the Enthoven family-controlled investment company Capricorn Ventures, which opened the first Nando’s in London in 1992.