Still tidying up its portfolio of businesses after its big acquisitions, ACT Group Plc yesterday announced another divestment, this time to a venture-backed management buyout. It has sold its ACT Computer Support Ltd computer maintenance and support business for ?14.5m cash to a new company formed by the unit’s management with backing from NatWest Ventures Investments Ltd and Phildrew Ventures Third Fund. The sum includes settlement of inter-company debt.