Anti-nuclear campaigners are planning to surround Britain's atomic warhead "factory" in Berkshire to mark 50 years since the first protest at the site.
AWE is the headquarters of Britain's nuclear development programme
The Campaign for Nuclear Disarmament (CND) said it would hold a huge march at the Atomic Weapons Establishment (AWE) at Aldermaston on Easter Monday.
The UK's submarine-launched nuclear defence system, Trident, is being upgraded at the site.
The first protest there was in 1958 when 10,000 people marched from London.
A CND spokesperson said the aim of the event was to surround the base and to hold a day of entertainment, including music and theatre.