BBC Wales Investigates undercover officers paid to spy on political activists. Some overstepped the mark - having relationships with women, and even fathering children with them. Show more
Discover 11,128,835 listings and 277,888 playable programmes from the BBC
BBC Wales Investigates undercover officers paid to spy on political activists. Some overstepped the mark - having relationships with women, and even fathering children with them. Show more