Fulham Shore, which operates Franco Manca and the Real Greek restaurants, has announced plans to open more sites during 2017 and 2018.
In the group's interim results for the six months ended 25 September 2016, it said it had increased turnover, profit and the number of restaurants it operates.
The company expects to end the current financial year in March 2017 with around 43 restaurants, dependent on building work.
During the period it generated revenue of £19.9m, up from £13.9m in 2015. It also achieved headline EBITDA of £3.7m, up from £2.6m the previous year, with headline operating profit of £2.4m compared to £1.7m in 2015.
It opened seven Franco Manca pizzerias in London, Brighton and Guildford, taking its total restaurant portfolio to 36 - made up of nine the Real Greek, 26 Franco Manca pizzeria and one Bukowski Grill.
Since 25 September 2016, the group has also opened three the Real Greek restaurants in Muswell Hill (London), Boxpark Croydon and Southampton and three Franco Manca restaurants in Westfield London, Westbourne Grove (London) and Southampton.
The group is currently fitting out a further Franco Manca pizzeria in Nova Victoria in London, which is scheduled to open in February 2017.
Contracts have recently been exchanged on three sites in and around London in Putney, Russell Square and Richmond, Surrey, all expected to open in the spring of 2017.
David Page, chairman of Fulham Shore, said: "Sites are available, our restaurants are busy and popular, our prices are good value and our staff are well motivated.
"We therefore look forward with confidence to the further expansion of our Franco Manca and the Real Greek businesses."