<a href="https://en.wikipedia.org/wiki/UK_Prime_Minister" class="extiw" title="w:UK Prime Minister">UK Prime Minister</a> <a href="https://en.wikipedia.org/wiki/Boris_Johnson" class="extiw" title="w:Boris Johnson">Boris Johnson</a>’s letter to <a href="https://en.wikipedia.org/wiki/European_Council_President" class="extiw" title="w:European Council President">European Council President</a> <a href="https://en.wikipedia.org/wiki/Donald_Tusk" class="extiw" title="w:Donald Tusk">Donald Tusk</a> with regards to postponement of Brexit to 31 Januar 2020
<a href="https://en.wikipedia.org/wiki/en:Boris_Johnson" class="extiw" title="w:en:Boris Johnson"><span title="Prime Minister of the United Kingdom from 2019 to 2022">Boris Johnson</span></a>, <a href="https://en.wikipedia.org/wiki/en:Government_of_the_United_Kingdom" class="extiw" title="w:en:Government of the United Kingdom"><span title="central government of England, the United Kingdom of Great Britain and Northern Ireland">Government of the United Kingdom</span></a>
OGL 3
<a rel="nofollow" class="external text" href="https://www.gov.uk/government/publications/letters-from-the-uk-to-the-eu-council-19-october-2019">Letters from the UK to the EU Council: 19 October 2019</a>