Infiltratng homeless

Gang approaching homeless to 'arrest' them could be criminals posing as police

Armed SAS troops take to streets disguised as tramps and street sweepers to stop another terror attack

MI5 undercover as homeless man in a park in Moss Side

MI5 Tom Marcus soaked himself in urine undercover as Homelesman

MI5 Agent Posed as Homeless Beggar to Foil Terrorist Plot

Undercover as a homeless drug addict for 15months

Undercover police targeting beggars: Homeless man brought to court after asking for 10p

Special ops soldiers have posed as homeless people with sniffer dogs as Britain steps up a secret war with terrorists