According to the Prime Minister’s Office, the UK will be sending 14 Challenger II main battle tanks to Ukraine and will begin training crews in the next week or two. The number of tanks being sent amounts to 3 platoons which would nominally create a tank company with supporting vehicles attached to it.
The news came to Ukrainian President Zelensky in a January 14th phone call with UK Prime Minister, Rishi Sunak. A press release by the Prime Minister’s office described the call this way,
The leaders reflected on the current state of Russia’s war in Ukraine, with successive Ukrainian victories pushing Russian troops back and compounding their military and morale issues.
They agreed on the need to seize on this moment with an acceleration of global military and diplomatic support to Ukraine.