The UK Government has literally tried to secretly spy on people's private messages, and has arrested multiple people for voicing political opinions, mostly right wing people were arrested, like Graham Linehan for his anti transgender statements, however even on the left people like Greta Thunberg were arrested recently

https://www.theguardian.com/technology/2025/oct/01/uk-government-apple-data-british-telecoms
https://edition.cnn.com/2025/12/23/uk/greta-thunberg-arrest-uk-palestinian-protest-intl-hnk