maarten4, was the incident you were on about on Friday at around 14:00 hrs? It's just I'm a serving fire-fighter at Heathrow. We received a call over at S3, ATC cleared us (emergency crossing N4W) and sent one around, I remember thinking how p,,,,d off that captain must be as he was almost on the deck. If it was you it certainly looked the dogs as you went overhead
(wish I had my camera).