The UK will send “armour piercing rounds which contain depleted
uranium” to Ukraine, for use with the tank squadron donated by the
British army. Defence minister Baroness Goldie made the admission yesterday
in response to a written parliamentary question from crossbench peer Lord
Hylton. Goldie said: “Such rounds are highly effective in defeating
modern tanks and armoured vehicles.” Russia has previously warned it
would regard the use of depleted uranium in Ukraine as a ‘dirty bomb’.

Declassified UK 21st March 2023

Britain supplying depleted uranium rounds to Ukraine

Putin threatens response over Britain’s toxic tank shells.

Times 21st March 2023

https://www.thetimes.co.uk/article/putin-threatens-to-respond-over-britain-s-toxic-tank-shells-rz3zf8hn7