TenetLime network increased its turnover by 25% to £50m in the 12 months to 30 September 2017.
The wider Tenet group also saw turnover increase by 10% to £168.6m.
Martin Greenwood, chief executive of Tenet Group, said: “We are proud to be one of the few groups who continue to make a success of the independent network model, whilst also being able to transition firms to directly authorised status if appropriate.
“It was very disappointing that the group incurred exceptional costs during the year, after taking the difficult decision to restructure a loss making subsidiary, but our underlying profitability remains solid.
“We aim to concentrate on our core propositions going forwards and have a great platform from which to improve performance, whilst maintaining our financial strength and continuing to enjoy the support of our major shareholders.”