Despite a threat from Russia to the West, the defence secretary, Ben Wallace, has said, the UK is sending its first long-range missiles to Ukraine.
Wallace said the M270 multiple-launch rocket system will help Ukraine defend itself against Russia.
According to the BBC, the UK government has not confirmed how many weapons will be sent, but it is understood there will be three initially.
The decision was co-ordinated with the US, which announced last week it was also supplying a rocket system.
The move by the US has already angered Moscow and on Sunday Russian President Vladimir Putin threatened to expand the list of targets Russia will attack in Ukraine if Western countries send long-range weapons to Kyiv.