The A12 near Woodstock Avenue (credit: Google Maps)
Adrian Miller had just got into the white Vauxhall Vivaro near Woodstock Avenue and the Esso Garage on the northbound carriageway.
He was forced out of his van and the suspect got into the driver’s seat.
The man then started to drive off with the door open while Adrian, a photographer, ran alongside trying to get him to stop.
But the suspect got away and was heading towards the Brook Street Roundabout.
It happened at around 4.45pm yesterday (Tuesday, 28 January).
No arrests have been made so far.
Anyone who witnessed the incident, or has information, is asked to call police on 101 quoting CAD 5087/28JAN or the independent charity Crimestoppers anonymously on 0800 555 111.
Tags: Romford, Havering, A12, Harold Wood, Harold Park