UK Surprising scale of police infiltration of political groups revealed

[Second Summer]

The database lists 124 groups that have been spied on by undercover police officers since 1968.
[...]
Undercover officers spied on 22 leftwing groups, 10 environmental groups, nine anti-racist campaigns and nine anarchist groups, according to the database.

They also spied on campaigns against apartheid, the arms trade, nuclear weapons and the monarchy, as well as trade unions. Among those spied on were 16 campaigns run by families or their supporters seeking justice over alleged police misconduct.

More:
Police spies infiltrated UK leftwing groups for decades (15. Oct. 2018)

12 animal rights groups have also been infiltrated.

In a handful of cases, the undercover agents deceived women into sexualities relationships.

At the same time, infiltration of far right groups appears to have been minimal.