Sir - Congratulations to John Mackintosh and his family and to Mr and Mrs Murray for at long last - it took 10 years - getting planning permission for their imaginative and well designed housing scheme in north Dornoch.

Sir - Commencing some time this summer, cargoes of radioactive material will be transported from Dounreay to Sellafield by train. These consignments will contain materials suitable for being used in the production of nuclear weapons. It is therefore to be expected that armed guards will accompany each movement (as happened in the 1980s). A total of about 50 journeys are proposed.