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 United Kingdom 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
2016 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) European Union (Future Relationship) Bill (pending)
Impact Impact on the Irish border Good Friday Agreement Effect on Scotland's constitutional position Impact on the EU Economic effects Effects on Gibraltar Scientific cooperation
EU–UK relations United Kingdom–European Union relations Trade deal negotiation between the UK and EU EU-UK Trade and Cooperation Agreement (TCA) Partnership Council Relations with EU Member States Austria Belgium Bulgaria Croatia Cyprus Akrotiri and Dhekelia Czech Republic Denmark Estonia France Germany Greece Hungary Ireland Ireland-UK Border British–Irish Council North/South Ministerial Council Italy Lithuania Malta Netherlands Poland Portugal Romania Slovakia Spain Status of Gibraltar Gibraltar–Spain Border Sweden 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 Renegotiation begins Jun 2015 Referendum Act passed Dec 2015 Renegotiation concluded Feb 2016 Referendum held Jun 2016 Theresa May becomes PM Jul 2016 Article 50 judgement Jan 2017 Notification Act passed Mar 2017 Article 50 invoked Mar 2017 2017 general election Jun 2017 Brexit negotiations begin Jun 2017 Withdrawal Act passed Jun 2018 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 Prorogation & annulment Aug-Sep 2019 Benn Act passed Sep 2019 Withdrawal agreement revised Oct 2019 Brexit delayed until 31 January Oct 2019 2019 general election Dec 2019 Agreement Act passed Jan 2020 UK leaves the EU Jan 2020 Implementation period begins Jan 2020 UK-EU trade deal agreed Dec 2020 Future Relationship Act passed Dec 2020 Implementation period ends Dec 2020 New EU-UK relationship begins Jan 2021
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