placards against the
RAF Molesworth fence of protestors at the south gate of the Faslane naval base The first
Aldermaston March organised by the
Campaign for Nuclear Disarmament took place at Easter 1958, when several thousand people marched for four days from
Trafalgar Square, London, to the
Atomic Weapons Research Establishment close to
Aldermaston in Berkshire, England, to demonstrate their opposition to nuclear weapons. The Aldermaston marches continued into the late 1960s when tens of thousands of people took part in the four-day marches. One significant anti-nuclear mobilisation in the 1980s was the
Greenham Common Women's Peace Camp. It began in September 1981 after a
Welsh group called "Women for Life on Earth" arrived at Greenham to protest against the decision of the Government to allow
cruise missiles to be based there. In December 1982 some 30,000 women from various peace camps and other peace organisations held a major protest against nuclear weapons on Greenham Common. On 1 April 1983, about 70,000 people linked arms to form a human chain between three nuclear weapons centres in Berkshire. The anti-nuclear demonstration stretched for 14 miles along the Kennet Valley. In London, in October 1983, more than 300,000 people assembled in Hyde Park. This was "the largest protest against nuclear weapons in British history", according to the
New York Times. Other peace camps were set up at the same time at
Naphill,
Daws Hill,
Upper Heyford, and
Lakenheath though none lasted more than a few years. In 2005 in Britain, there were many protests about the government's proposal to replace the ageing
Trident weapons system with a newer model. The largest protest had 100,000 participants and, according to polls, 59 percent of the public opposed the move. In October 2008 in the United Kingdom, more than 30 people were arrested during one of the largest anti-nuclear protests at the
Atomic Weapons Establishment at Aldermaston for 10 years. The demonstration marked the start of the UN World Disarmament Week and involved about 400 people. In October 2011, more than 200 protesters blockaded the
Hinkley Point C nuclear power station site. Members of several anti-nuclear groups that are part of the Stop New Nuclear alliance barred access to the site in protest at EDF Energy's plans to renew the site with two new reactors. In January 2012, three hundred
anti-nuclear protestors marched against plans to build a new nuclear power station at Wylfa. The march was organised by Pobl Atal Wylfa B, Greenpeace and Cymdeithas yr Iaith, which are supporting a farmer who is in dispute with Horizon. In February 2012, protesters set up camp in an abandoned farm on the site of the proposed Hinkley Point C nuclear power station. They are "angry West Somerset Council has given EDF Energy the go-ahead for preparatory work before planning permission has been granted". The group of about seven protesters also claim a nature reserve is at risk from the proposals. On 10 March 2012, the first anniversary of the
Fukushima nuclear disaster, hundreds of anti-nuclear campaigners formed a symbolic chain around Hinkley Point to express their determined opposition to new nuclear power plants, and to call on the coalition government to abandon its plan for seven other new nuclear plants across the UK. Similar protests took place against new nuclear plants at Wylfa in North Wales and Heysham in Lancashire. In April 2013, thousands of Scottish campaigners, MSPs, and union leaders, rallied against nuclear weapons. The Scrap Trident Coalition wants to see an end to nuclear weapons, and says saved monies should be used for health, education and welfare initiatives. There was also a blockade of the
Faslane Naval Base, where Trident missiles are stored. In June 2025, demonstrators from groups such as
Stop Sizewell C and
Together Against Sizewell C staged a large rally on Sizewell Beach in
Suffolk to oppose the construction of the new
Sizewell C nuclear power station. Hundreds of protesters voiced concerns about environmental damage, coastal impact, and the economic priorities of nuclear energy over renewables, and marched to the site’s perimeter to tie symbolic ribbons and deliver speeches. ==Specific groups==