After World War II, work-permit schemes issued under the Attlee government (in office: 1945–1951) recruited Ukrainians to work in the mills of Lancashire and in the greenhouses of the Lea Valley (Middlesex/Essex).

The document refers to three identical political agreements signed at the OSCE conference in Budapest, Hungary on 5 December 1994, providing security assurances by its signatories relating to the accession of Belarus, Kazakhstan and Ukraine to the Treaty on the Non-Proliferation of Nuclear Weapons.

Relations between the United Kingdom and Ukraine are currently very close,[10] there are regular bilateral visits between the countries and political dialogue covers the full range of international issues.

These are their proper names, but they consist of two documents: "The Package of measures for the implementation of the Minsk Agreements" and "The Declaration in Support of the Package of Measures for the Implementation of the Minsk Protocol, adopted on February 12, 2015" to prevent an armed conflict inside Ukraine between military personnel subordinate to the central government and citizens of the eastern part of Ukraine: Donetsk People's Republic and Luhansk People's Republic.

[14] In June 2020, NATO formally recognised Ukraine as an Enhanced Opportunities Partner, a status given to countries that have made significant contributions to NATO-led operations and missions.

[15][16] British Defence Secretary Ben Wallace welcomed the decision and praised current ongoing military training programs between both countries.

[18] On 18 March 2022, Ukrainian respondents voted the UK the third most-supportive country to Ukraine after Poland and Lithuania in a poll carried out by Rating Group.

[19] In response to the Russian military build-up proceeding the invasion, on 17 February 2022, the UK, Poland and Ukraine agreed a British–Polish–Ukrainian trilateral pact to strengthen strategic cooperation between the three countries.

[20] In a poll published by Rating Group, Ukrainian respondents voted in favour of closer ties to Poland and the UK as opposed to NATO membership.

"[21] In April that year, a road in Ukraine near Odesa was renamed by the council to 'Boris Johnson Street' (вулиця Бориса Джонсона) in honour of the UK Prime Minister's leadership in opposing the invasion.

This point was also expressed by the leader of NATO[28] and the G7 collectively[29]—both groups the UK is a part of—as well as British Foreign Secretary James Cleverly, adding that "when Ukraine has won this war then we will support them as they rebuild their homes, their economy, and their society.

"[30][31] In December 2022, Deputy Chief of the Defence Staff Lieutenant General Robert Magowan wrote that Royal Marines had supported "discreet operations" in a "hugely sensitive environment" in Ukraine, with a "high level of political and military risk".

This included 350 marines from 45 Commando supporting diplomats from the British embassy and a small number of military personnel deployed in Ukraine to provide weapons and training.

[38] In research published by the Munich Security Conference, Ukrainian respondents voted the UK the best performing country in response to the Russian invasion, ahead of the US, Canada and the EU.

[41] On 16 January 2025, British Prime Minister Keir Starmer and Ukrainian President Volodymyr Zelenskiy signed a landmark 100-year partnership agreement to deepen security ties and strengthen their countries' relationship.