Brexit: the proposed UK-EU security treaty Contents

Appendix 3: Call for evidence

The House of Lords EU Home Affairs Sub-Committee, chaired by Lord Jay of Ewelme, has launched an inquiry into Brexit and the proposed UK-EU security treaty.

The House of Lords EU Committee and its six Sub-Committees are conducting a coordinated series of short inquiries looking at the key issues that will arise in the negotiations on Brexit. This inquiry will examine the practical and legal challenges for negotiating a security treaty with the EU, and what such a treaty might cover. The Sub-Committee is looking at internal police and security cooperation rather than external defence and foreign policy cooperation.

This is a public call for written evidence to be submitted to the Sub-Committee. The deadline is Friday 25 May. The Sub-Committee values diversity and seeks to ensure this wherever possible. How to submit evidence is set out later in this document, but if you have any questions or require adjustments to enable you to respond, please contact the staff of the Sub-Committee. We look forward to hearing from a range of interested individuals and organisations.

Inquiry focus

The Sub-Committee is examining the Government’s proposal to negotiate a treaty between the UK and the EU that would provide a legal basis for continued cooperation on security. In its future partnership paper on future security, law enforcement and criminal justice cooperation, the Government stated that “it is in the clear interest of all citizens that the UK and the EU sustain the closest possible cooperation in tackling terrorism, organised crime and other threats to security now and into the future”, and called for a partnership between the UK and EU “that goes beyond the existing, often ad hoc arrangement for EU third country relationships”. In her speech to the Munich Security Conference on 17 February 2018, Prime Minister Theresa May said that “the UK has been at the forefront of shaping the practical and legal arrangements that underpin [the UK and the EU’s] internal security co-operation”. EU Member States currently enjoy levels of cooperation and mutual recognition that go deeper than any comparable international collaborations; the Government has supported the idea that a UK-EU treaty would provide “a legal basis” for continued cooperation.

The European Commission’s paper on police and judicial cooperation in criminal matters identifies the following principles for a future partnership with the UK to combat terrorism and international crime: the EU’s interests must be protected; a non-Member State cannot have the same rights as Member States (there must be a balance of rights and obligations); and the EU must continue to have autonomy in making decisions. Security and justice are areas of shared competence for the EU. This means that both the EU and its Member States may adopt legally binding acts in this area. However, the Member States can do so only where the EU has not exercised its competence or has explicitly ceased to do so. An agreement between the EU and a third country in an area of shared competence is known as a “mixed agreement”. This means that it is concluded both by the EU and by the Member States of the EU, which must give their consent.

The Committee is seeking evidence on the following questions in particular:

Shape of future arrangements

Transition or implementation period

Other modes of cooperation

Structure of future cooperation


Post-Brexit influence

Northern Ireland

Submissions need not address all questions.

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