This is an utterly absorbing thread. Sadly my contact with The Trident was either seeing the Northbound Belfast Shuttle turning vaguely left over The Midlands, or the decaying machines on the fire dump at the 23 threshold end at Teesside, almost as if they were victims of Midland's mid-eighties inroads into the shuttle routes.
Meanwhile...
London Heathrow B.E.A. Vickers Vanguard G-APER and two De Havilland Tridents | Flickr - Photo Sharing!