In 1999 Phil and Grant drove a car into the river. Phil was quickly found but Grant was still missing. It turned out he had swum ashore and, a week later, Beppe discovered he had taken Courtney out of the nursery and headed to Stansted Airport to get a flight to, I think, Brazil.
Anyway, when Beppe announced that Grant was alive and well and heading for Stansted Airport, Peggy asked in a really dim voice "Wass 'ee gone vere for?".
Ever since then, if I see or hear Stansted Airport, I always think about Peggy's daft question!