Agreement Between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of the Spanish State on the International Carriage of Goods by Road; London, 26 April 1972

Convention on Social Security Between the United Kingdom of Great Britain and Northern Ireland and Spain (with Protocol on Health Care); London, 13 September 1974 ..

Exchange of Notes Between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Spain Concerning the Reciprocal Granting of Licences to Amateur Radio Operators

Exchange of Notes Between the Government of the United Kingdom of Great Britain and Northern Ireland and the Government of Spain Concerning the Safeguards and Assurances Relating to the Transfer of Nuclear Material from the United Kingdom to Spain

Negotiations Between the Member States of the Western European Union (WEA) and the Governments of the Portugese Republic and the Kingdom of Spain Concerning the Accession of Portugal and Spain to the WEU

Protocol for the Accession of the Portuguese Republic and the Kingdom of Spain to the Treaty of Economic, Social and Cultural Collaboration and Collective Self-Defence, Signed at Brussels on 17 March 1948, As Amended by the "Protocol Modifying and Completing the Brussels Treaty", Signed at Paris on 23 October 1954, with Exchange of Letters

Protocol Laying down Certain Provisions Concerning the Agreement Between the European Economic Community and Spain Following the Accession of New Member States to the European Economic Community ; Brussels, 29 January 1973