Mike Tilbrook, chairman of MMT Computing Plc, London W, claims he is pleased with the 10% increase in pre-tax profits to UKP1.01m for the six months to February 28 (Company Results, page five): he says that MMT Computing AS, a joint venture with C E Heath Plc, shows a small loss but is profitable on a week-by-week basis: MMT Computing (Training) Ltd is also unprofitable, and Tilbrook acknowledges that bookings have been slower than expected, although he hopes a large order from British Telecom signals a breakthrough; he says that established joint ventures with MMT Computing (Reading) Ltd and MMT Computing (South East) Ltd continue to perform well, as does the wholly-owned RTL Software Ltd; MMT has upped its holding in Quotient Plc to 9.6%, and Tilbrook believes that it will prove to be of long-term benefit.