Embassy of the People's Republic of China
49-51 Portland Place (western corner with Weymouth Street)
London,
W1B 1JL
GPS grid coordinates:
Latitude: (WGS84) N51:31:16 ( 51.521120 )
Longitude: (WGS84) W0:08:45 ( -0.145800 )
Note the large array of various types of radio antennas on the roof.
There is a permanent Free Tibet demonstration in support of the occupied and oppressed country of Tibet (which was invaded by Communist China in 1950) , on the other side of Portland Place, outside the the Royal Institute of British Architects.
The Free Tibet campaign has been subjected to Chinese "cyber warfare" over the years.