I missed seeing this but Mrs PB -ex BA Ops and an airport child said she heard an extremely unusual noise and an aircraft that seemed to be going no where, on LHR easterlies things just fly past Camberley.
I am sure ATC had it all under control but orbiting a widebody at 4000 ft over a fairly populated area seems a slightly odd choice-a few miles west and its very open all the way to Basingstoke. Also on easterlies quite lot of Inbounds off Ockham pass between Camberley and Bracknell at 4-6000 feet .
Ever had to hold someone this close in to LHR Mr HD?