Donaldson (ElAl) 707's
I believe Donaldson went in 72/73 as a policeman for the BAA Constabulary we travelled from LHR - STN daily for a few weeks as two 707's had been put into ElAl livery when the company folded, it was considered at the time as both a/c were at risk from an attack. One was located aside of the disused STN cross runway - with the nose wheel removed. In those days the authority's were worried about the a/c being stolen and flown off. (some may recall that in 78 an ElAl crew were attacked in Central London, with a number of fatalities)