Free Traffic Legal Advice

Well Tawananyasha let us hope as your name implies that "you have found grace or mercy from the Most High" in this case the Most High is the Po Po and from past personal experience of The Po Po GOOD LUCK WITH YOUR FIGHT.

I know that area quite well.

Was he heading from Bexley Village, towards the London bound A2 (i.e. with the Holiday Inn on the right)? Perhaps here?

 https://www.instantstreetview.com/@51.447241,0.153756,0h,0p,1.3z,JKuOfwC8QPdv6fEyPMLmqw

I'm not sure how far beyond the beginning of the 50mph limit the camera is.

The problem he faces is that an approved device (the camera and its associated speed measurement apparatus) is assumed to be working correctly unless the contrary can be shown. Unfortunately simply suggesting such a speed is not possible is unlikely to cut the mustard.

Can you confirm the location?

I know that area very well. The camera in question is an average speed camera. The exit camera is, I believe, quite a few miles down the road just past the Well Hall Road underpass. Plenty of time to achieve an average speed of 58mph.

There's a whole host of average speed cameras on that stretch through to the Blackwall Tunnel and quite how the cameras work with one another is a bit of a mystery but this link gives some clues as to which sections are 'policed' by the cameras - https://www.met.police.uk/SysSiteAssets/foi-media/metropolitan-police/disclosure_2021/january_2021/location-of-speeding-offences-november-2019-november-20202
Line 123 on the spreadsheet - Southwold Rd On Slip nr A2 East Rochester Way DA5 to A2 Rochester Way Relief Rd nr Well Hall Rd SE9 W/B (35313501)


Location of camera referred to in OP - https://www.google.co.uk/maps/@51.4474124,0.1536686,3a,75y,341.91h,98.82t/data=!3m6!1e1!3m4!1sZCYcCZUEv3Z_bAQKC_kH-w!2e0!7i16384!8i8192!5m1!1e1?entry=ttu