Air france Viscounts were regulars into LHR and AF operated V700s for about 15 years according to another site, It also said they ordered 12 which was quite decent number for the time and indeed the viscount at LHR was very much the A319/320 of its dayas the dominant type at Heathrow.
However AF were great for spotters because they threw in all kinds of things as the earleir poster suggested on freight trips and flights to places like Marseilles , DC4s Connies, the wonderful Deux Pont, which it is often alleged only got to 5000ft by the coast , even DC3s and several of these survived into the Caravelle /707 320 era too.