By Guy Taylor Heathrow Airport has reported a fourth consecutive month of record-breaking passenger traffic in what has proved one of the UK’s busiest ever summers for travel demand. Some 8m travellers passed through in August, up 5.5 per cent year-on-year and bringing the West London hub’s rolling 12 month total to 82.6m. Heathrow said it was “on track” to welcome 30m passengers during the peak summer months between June and September, another record-breaking figure. Chief executive Thomas Woldbye said: “I’m grateful to team Heathrow for their preparation and dedication to delivering an extra…