Revenue at children’s services provider Cambian Group grew 7.6% to £196m in the year ended 31 December 2017 (2016: £182.1m), helped by a rise in average fees due to a move into higher severity services. The company posted a pre-tax loss of £9m, less than the £37.4m in 2016. Adjusted EBITDA growth was 15% to £18.7m (2016: £16.2m),…