British Telecommunications Plc is trying to improve its public image and get people into to the long-distance habit by offering cut price phone calls every Sunday evening between the November 1 and December 27: during the period, any UK calls made on a Sunday between 3pm and midnight will be charged as a cheap rate local call, irrespective of whether they would normally be long distance or B-rate; ISDN, premium-rate, cell-phone and operator connected calls are excluded. The latest notable person to leave British Telecommunications Plc is Peter Cooke, the company’s erstwhile head of data networking. Cooke, who had overall responsibility for British Telecom’s Electronic Data Interchange and Global Network Service offerings, is not being replaced directly, and he hasn’t said yet where he is headed.