What is the official designation of the building visible from the Morpeth Arms in a manner enabling spying?
Morpeth Arms The Morpeth Arms is a public house at 58 Millbank, in the Pimlico district of London. It was built in 1845 to refresh prison warders serving at the Millbank Penitentiary. It now contains a Spying Room which provides a good view of the headquarters of the Secret Intelligence Service across the river. The building is listed as Grade II and it is now part of the Young's estate.
Air Observation Post Air Observation Post (AOP) is the term used by the Royal Air Force and other services of the United Kingdom and Commonwealth air forces, for an aeroplane or helicopter used in the role of artillery spotter. In this role, either the pilot of the aircraft or a passenger acts as an observer watching for targets on the ground, and/or as a Forward Observation Officer directing the fire, by radio, of artillery on the ground (or calling in tactical ground-attack aircraft).