The London, Hillingdon/ Buckinghamshire continues northwards up the west side of the M25 until it is north of some buildings when it leaves the motorway and joins the course of the River Colne and continues up it northwards.
Wraysbury River flows southwards
The River Colne flows southwards
Post to the north Thorney
Post to the south Longford
Post to the east Harmondsworth
Post to the west Colnbrook bypass
Sites on the London, Hillingdon side of the border
This is the historic boundary of Harmondsworth and runs between the Colne and the Wraysbury
Harmondsworth Way Waterside
Harmondsworth Moor Country Park opened in 2000 on the site of old gravel workings.
Keyhole is a feature in the park made of stones from Waterloo Bridge demolished in 1935. Other stones used extensively elsewhere in the park. When the bridge was demolished it was intended to re-erect it somewhere and the stones were numbered and stored here. Eventually most were crushed for aggregate.
Memorial to a Royal Canadian Air Force bomber who crashed here in 1943
Harmondsworth Moor Country Park. Web site
London Borough of Hillingdon. Web site
Sherwood. Harlington and Harmondsworth