Nucleus (advocacy group)

Nucleus was a British-European advocacy group, the forerunner to British Influence (sometimes The Centre for British Influence). Nucleus was based in London, with additional operations in Brussels.

Part of a series of articles on
Brexit
Withdrawal of the United Kingdom from the European Union Glossary of terms
Background Euroscepticism in the United Kingdom UK opt-outs from EU legislation Campaigns for a referendum People's Pledge Labour for a Referendum Bloomberg speech Project Fear Brexit: The Movie In or Out 2013–14 EU (Referendum) Bill (unsuccessful) 2015–16 EU membership renegotiation 2015 EU Referendum Act (Gibraltar) Opinion polling on the United Kingdom's membership of the European Union
Referendum Issues Endorsements Opinion polling Results Causes for result International reactions Allegations of unlawful campaigning Immediate aftermath 2016 Conservative Party election 2016 Labour Party election 2016 UKIP election Department for Exiting the EU Department for International Trade Campaigns Leave campaigns Vote Leave (official) Business for Britain Conservatives for Britain Students for Britain BeLeave Leave.EU Bpoplive The Freedom Association Better Off Out Grassroots Out Labour Leave Get Britain Out Bruges Group Campaign for an Independent Britain Remain campaigns Britain Stronger in Europe (official) Labour In for Britain European Movement UK Britain in Europe British Influence Business for New Europe Nucleus
Notice of withdrawal Article 50 process R (Miller) v Secretary of State for Exiting the European Union EU (Notification of Withdrawal) Act 2017
Negotiations Negotiation positions EU negotiation mandate Chequers agreement Timeline: 2017, 2018, 2019
Withdrawal agreement Brexit divorce bill Irish backstop No-deal Brexit Continuing United Kingdom relationship with the European Union
Parliamentary votes Withdrawal Act 2018 (Gibraltar) Cooper–Letwin Act Benn Act Public Vote Bill (not passed) Terms of Withdrawal Bills (not passed) Scottish EU Continuity Bill (blocked) Withdrawal Agreement Act (Gibraltar)
Impact Impact on the Irish border Good Friday Agreement Impact on the EU Economical effects Effects on Gibraltar Scientific cooperation
Future EU–UK relations United Kingdom–European Union relations Trade deal negotiation between the UK and EU Cyprus-United Kingdom relations France–United Kingdom relations Germany–United Kingdom relations Ireland-United Kingdom relations Italy–United Kingdom relations Malta–United Kingdom relations Spain-United Kingdom relations Conjectured EEA membership
Opposition in the UK Post-referendum opinion polling New initiatives Change Britain More United Open Britain The New European Unite to Remain Led By Donkeys Revoke Article 50 petition Postcards from the 48% Proposed second Scottish independence referendum Calls for a second referendum People's Vote Britain for Europe European Movement UK For our Future's Sake Healthier IN the EU InFacts Open Britain Our Future Our Choice Scientists for EU Other organisations Best for Britain Bollocks to Brexit Change UK Liberal Democrats Right to Vote
Timeline Bloomberg speech Jan 2013 European Parliament election May 2014 2015 general election May 2015 Referendum Act passed Dec 2015 Renegotiation concluded Feb 2016 Referendum held Jun 2016 Theresa May becomes PM Jul 2016 Notification of withdrawal sent Mar 2017 Brexit negotiations begin May 2017 2017 general election Jun 2017 Chequers plan presented Jul 2018 Withdrawal agreement released Nov 2018 Meaningful votes Jan–Mar 2019 Brexit delayed until 12 April Mar 2019 Cooper–Letwin Act passed Apr 2019 Brexit delayed until 31 October Apr 2019 European Parliament election May 2019 Boris Johnson becomes PM Jul 2019 Benn Act passed Sep 2019 Prorogation & annulment Sep 2019 Withdrawal agreement revised Oct 2019 Brexit delayed until 31 January Oct 2019 2019 general election Dec 2019 UK's departure from the EU Jan 2020 Implementation period ends Dec 2020
EU portal · UK portal

Founded in 2010, Nucleus promoted a 'euro-realist' British approach to European political and business affairs. As well as regular bulletins, Nucleus produced commentaries, and hosted briefings, seminars, and networking events both in London and Brussels. Nucleus was unaffiliated with any political party, and was a partner in both the British Brussels Network, along with Business for New Europe, the British Chamber of Commerce in Belgium, and the Institute of Chartered Accountants in England and Wales,[1] and the pan-European EuropAssociation.[2]

In 2013 Nucleus relaunched as British Influence, with a heavier campaigning focus, in response to the call by Prime Minister David Cameron for an in/out referendum on the UK's European Union membership