Aldermaston

 was a city in England, located about four days' walk from London.

Aldermaston was the site of the Atomic Weapons Research Establishment. Protesters from the Campaign for Nuclear Disarmament annually marched to Aldermaston, though by 1960 they had changed direction and marched from Aldermaston to London. (PROSE: Come Friendly Bombs...)

Ian Chesterton and Barbara Wright participated in the Aldermaston marches prior to 1963. It was on the marches that they first became friends. (AUDIO: The Doctor's Tale)