Location : The M25 anticlockwise exit slip at junction J26 .

Location : The M11 northbound entry slip at junction J6 from M25 anti-clockwise.

Location : The A47 eastbound between the junctions with the A1 and the A1260 .

Location : The M11 northbound between junctions J5 and J6 .

Location : The M40 southbound entry slip at junction J9 .

Location : The A404 southbound between the A4130 and the junction with the A4 .

Location : The A404 southbound exit slip to the A4 .

Location : The M4 eastbound entry slip at junction J6 .

Location : The M40 northbound between junctions J8A and J9 .

Location : The M4 westbound at junction J6 .

Location : The M4 westbound between junctions J5 and J6 .

Location : The M4 westbound exit slip at junction J6 .