At Colt Telecom, big shot US investor Fidelity International, which owns 54%, is tightening its grip. Colt chairman James Curvey, 67, vacates the chair at end-year in favour of his Fidelity colleague, Barry Bateman. Another Fidelity man, Andrew Steward, becomes chief financial officer in June. Colt said: 'Fidelity has three directors out of nine.'