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Our publications

Treaties

Treaty exchange (Getty images)Welcome to the FCO Treaty Section pages, including the UK Treaties Online service. We support the FCO and other government departments with advice on practice and procedural matters relating to the conclusion of treaties by the United Kingdom. We also provide information on those treaties to which the UK is, or has been a party.

We provide a range of regular services, as follows:

Our Procedures Team:

  • advise on UK treaty practice and procedure including preparation of treaty texts, instruments of ratification and Full Powers (authority to sign treaties on behalf of the UK)

Our Information Team


  • provide UK Treaties Online,  a interactive database enabling users of this site to research details of bilateral and multilateral treaties applying to the UK
  • offer an enquiry service which can help explain or clarify information on bilateral and multilateral treaties applying to the UK.
  • from 2010, publish a regular Bulletin of recent changes to UK treaties in force.

UK Treaties Online

UK signatures for the Lisbon Treaty (NICOLAS ASFOURI/AFP/Getty Images)

Access details of over 14,000 treaties that the UK has been involved in

Enquiries service

Woman officer worker answering a telephone. © Getty Images

Our Treaty Section maintains a database of treaties, which holds details of all the treaties to which the UK is, or has been, a party

Practice & procedures

Wax seals (estherase/Esther Simpson/Flickr)

Advice on UK treaty practice and procedure including preparation of treaty texts, instruments of ratification and full powers

UK Overseas Territories

Bermuda - UK overseas territory (Getty Images)

Status of multilateral treaties applying to the UK overseas territories

Depositary

Locarno rooms with flags (Flickr/creative common)

The UK is the legal depositary for numerous multilateral treaties on a wide range of subjects

Publication of treaties - introductory note

UK sign the Lisbon Treaty (NICOLAS ASFOURI/AFP/Getty Images)

Information on the publication of treaties

UN registration

International flags outside the UN building, New York, Getty Images

United Nations registered treaties that have entered into force for the UK

Lists of treaties

Treaties that may apply in certain circumstances, or to defined territorial areas

Treaty links

The United Nations Security Council Session (Getty images)

Links to international organisations, other States' treaty websites, and other international law websites useful for further research

Treaty texts (investment, bilateral enforcement and prisoner transfer only)

Full texts of a range of treaties involving the UK

Vienna Convention on the Law of Treaties

Flags in front of the United Nations Office (UNOG) in Geneva, Switzerland )Johannes Simon/Getty Images)

Vienna treaties applying to the United Kingdom

Contact us:

Our Treaty Enquiry Service (which is free of charge) is open from 0900 to 1700 Monday to Friday.

Tel: 020 7008 1109
Email: treaty.fco@gtnet.gov.uk

Written enquiries can also be made to:

Treaty Enquiry Service
Legal Advisers Directorate
Foreign and Commonwealth Office
Rm WH.MZ 23
London
SW1A 2AH  


Further Information:

We also provide the following on our treaty pages: