Or the Ruth Davidson rent-a-tank: https://news.channel4.com/election2015/04/29/update-4401/
(more seriously, let's not forget the deployment of the Parachute Regiment to Northern Ireland, although that was a while ago)
That's not a tank - looks like an Abbot SPG? ;-)
I think last time we had a tank at a protest the protestors had rented it! https://www.vice.com/en/article/yer-das-gone-rogue-guido-faw...
Northern Ireland is a big part of why the UK doesn't think the optics of deploying tanks are a show of strength and doesn't think it comes without a cost...