Civil liberties and privacy campaigners say that more than £3.9 million has been spent by public bodies across the country in the last two years on paying private investigators for surveillance work - including snooping on their own staff.
The Big Brother Watch study found 27 local councils nationally had employed private firms to undertake surveillance - ten of which are in London.
Hammersmith & Fulham
Kensington & Chelsea
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The inaugural service left London Liverpool Street for Shenfield, Essex, on the existing TfL Rail route on Thursday morning.
Councils believe that 600 high-rise blocks in England are wrapped in potentially flammable cladding, Downing Street announces.