Location #4

Chapter 2
As I drove home from the film studios at Shepperton on a rain-swept June evening, my car skidded at the intersection below the entrance to the Western Avenue flyover.. Out of my control, the car crossed the reservation and turned up the high-speed exit ramp.

Having difficulty with this location... the entrance is presumably from Shepperton to where... later on Ballard (see note Location #6) is said to live at Drayton Park, so we need to trace his route home! Shepperton Film Studios via Western Avenue to Drayton... A psychopathic AA Route Finder is needed.

From Route Finder:

0.00 Start out at Shepperton,Surrey B376 0.00
0.02 At Shepperton, traffic signals continue forward onto Green Lane (signposted Sunbury, Walton,) B3366 0.02
0.62 At roundabout take the 1st exit onto the A244 (signposted Feltham, Kingston, Sunbury, Staines) A244 0.64
0.53 At roundabout take the 1st exit onto the A244 (signposted Feltham, Kingston, Staines, Sunbury, M3) A244 1.17
0.30 Warning: Speed Cameras along the A244 A244 1.47
0.87 At The Shears Junction turn right onto the A308 (signposted C London. Kingston, Sunbury) A308 2.34
0.43 At Sunbury Cross roundabout take the 2nd exit onto the A316 (signposted London Central, Richmond, Heathrow, A316, Feltham) A316 2.77
0.24 Continue forward, then merge onto the A316 A316 3.01
1.50 Warning: Speed Cameras along the A316 A316 4.51
1.22 At Hospital Bridge Roundabout take the 2nd exit onto the A316 (signposted Central London, Richmond) A316 5.72
1.45 At roundabout take the 2nd exit onto the A316 (signposted Central London, Richmond) A316 7.17
0.34 At roundabout take the 2nd exit onto the A316 (signposted Central London, Richmond) A316 7.51
0.36 At roundabout take the 2nd exit onto the A316 (signposted Central London, Richmond, Chiswick) A316 7.88
0.44 Twickenham Bridge A316 8.31
0.14 Continue forward to cross Twickenham Bridge A316 8.45
0.58 At Richmond Circus roundabout take the 1st exit onto the A307 (signposted Ealing, M4, N.Circular) A307 9.04
1.40 At Kew Green, traffic signals turn left onto the A205 A205 10.44
0.29 Kew Bridge A205 10.72
0.15 At Kew Green, traffic signals bear right onto the A205 A205 10.87
0.27 At roundabout take the 2nd exit onto the A406 (signposted N Circular, A406, A40, M1, Wembley) A406 11.14
0.34 Warning: Speed Cameras along the A406 A406 11.49
0.37 At Gunnersbury Park turn right onto the A4000 (signposted Shepherds Bush, Acton) A4000 11.86
0.66 At traffic signals turn right onto the A4020 (signposted Shepherds Bush) A4020 12.52
0.06 At traffic signals continue forward onto the A4020 A4020 12.58
0.01 Turn left onto the A4000 A4000 12.59
1.04 At Gpsy Corner turn right onto the A40 (signposted Central London) A40 13.63
0.14 At Gipsy Corner continue forward onto the A40 A40 13.78
0.72 Warning: Speed Cameras along the A40 A40 14.50
0.03 Finish on Western Avenue,Acton A40 14.52
- Section time 0:47, Total time 0:47 - - -
0.00 Start out on Western Avenue,Acton A40 14.52
0.01 Turn right onto Old Oak Common Lane Old Oak Common Lane 14.53
0.01 Turn left onto Old Oak Road Old Oak Road 14.54
0.07 Turn right onto East Acton Lane East Acton Lane 14.61
0.04 Turn right onto Old Oak Common Lane Old Oak Common Lane 14.65
0.07 Turn left onto the A40 A40 14.72
0.01 Warning: Speed Cameras along the A40 A40 14.73
0.72 At Gipsy Corner branch left, then merge onto the A4000 (signposted Acton, Harlesden, Willesden Green) A4000 15.45
0.12 At T-junction turn left onto the A4000 (signposted Acton) A4000 15.57
0.93 Turn right onto the A4020 A4020 16.50
0.07 At traffic signals turn left onto the A4000 A4000 16.58
0.65 At Gunnersbury Park turn left onto the A406 (signposted S. Circular, M4, Richmond) A406 17.23
0.38 Warning: Speed Cameras along the A406 A406 17.61
0.30 At Chiswick Roundabout take the 5th exit onto the A4 (signposted The West, Heathrow, Staines, Hounslow, M4) A4 17.90
0.29 Warning: Speed Cameras along the A4 A4 18.20
0.37 Branch left, then join the M4 motorway (signposted The West, Heathrow Airport) M4 18.57
4.46 Heston Service Area (MOTO) M4 23.03
2.44 Leave the M4 at junction 4, then at roundabout take the 3rd exit onto the M4 (signposted Uxbridge) M4 25.47
0.52 Branch left, then at roundabout take the 3rd exit onto Cherry Lane (signposted West Drayton) Cherry Lane 25.99
0.48 Bear right onto Sipson Road Sipson Road 26.47
0.31 At "The Fox and Pheasant" public house continue forward Unclassified 26.79
0.11 Turn right onto Porters Way Porters Way 26.89
0.01 Arrive at West Drayton,London Unclassified 26.90
- Section time 0:41, Total time 1:28