Britain will double the number of British forces in Estonia as part of the NATO deployment, UK Defence Secretary Ben Wallace said this, Reuters reported.

In addition, Britain will send weapons, including tanks and armoured fighting vehicles, to the country due to fears of a Russian invasion of Ukraine.

"Alongside our NATO Allies, we are deploying troops and assets on land, sea and air to bolster European defences in response to the build-up of Russian military forces on the border of Ukraine," British defence minister Ben Wallace said in a statement.

"NATO and our allies have been clear that an invasion of Ukraine will be met with severe consequences."