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See us if you can: GCHQ surveillance agency reveals London base

See us if you can: GCHQ surveillance agency reveals London base

  • TV-G
  • 2019
  • 1mins
A nondescript red brick building tucked away beside a pub near a park in central London was revealed on Friday to have been a base of one of the world's most sophisticated spy services - Britain's GCHQ eavesdropping agency. Mia Womersley reports