In 2019, John Anderson interviewed Konstantin Kisin. The discussion is transcribed by me. I is the interviewer and K is for Konstantin.
K: In Russia last year 400 people were arrested for things that they posted on social media. Obviously this country is very different. How many do you think were arrested in Britain for what they said in social media?
K: Take a guess.
I: I've no idea.
I: Really? Arrested for things that they said on social media? ...
Were over 3000 people arrested in Britain for social media posts in before 2019?
What are the numbers today?
Edit: Please note that
1) The question is about the UK, so Russia is irrelevant.
2) This discussion took place before the current war.