Interserve, the international support services and construction group, announces its half-year results for the six months ended 30 June 2011.

Shares in Interserve rose 10.5 per cent yesterday after the group posted higher first-half profits, saying it was confident about its medium-term outlook as demand for outsourcing gathered pace.

The company, whose clients include the BBC, the NHS and retailers including Sainsbury’s, said pre-tax profits rose 10.3 per cent to £30.1m in the first half of the year, despite choppy market conditions.