
01Section
The northern approach
The A4 Bath Road runs along the northern boundary of the airport past Harlington and Longford, and the Northern Perimeter Road serves the cargo area, the maintenance bases and the business aviation facilities.
Coming from London, the M4 to junction 4 and then the A4 westbound is the standard line. From the west, the M25 at junction 14 or 15 leads onto the same road from the opposite direction.
None of this touches the terminal road system, which is the point. The tunnels, the terminal loops and the drop-off arrangements that govern scheduled travel are irrelevant to a private movement here.









