Is this sign now missing?  It's immediately after the end of the DYL as you enter Belper Road.

Although there is no longer access to the DVLA by foreign authorities, in this case, as the driver has been revealed by the Italian hire company the offence may be processed as usual with reminders and increased penalty for up to a year after which, in theory, there could be an outstanding penalty.

The op will not be on any list of outstanding offenders at ports and passports do not have addresses

He will not be in the same vehicle on future visits to France so there is no risk of a check unless he commits an offence with police involvement.

Pay up to stop worrying is the simple answer

Surely you know where you were parked?

Anyway, if you look at the holes in the road behind your car in the fourth picture above, they match perfectly with google street view at https://maps.app.goo.gl/YqCHP3g1xBipD7aV6 as illustrated here:





Also if you look at the GSV here https://maps.app.goo.gl/v2R5AgzvVs99g5W49 you can see the same houses at the end of the road that are in the final council image in my post at the top of this page. If you had been parked on the eastern side then the houses at the end of the road would have been the ones you can see here: https://maps.app.goo.gl/aq6uwgLgfpAC1kcw6

Therefore, you were 100% on the western side.

At 9.20 the sun would be in the east and shadows would 'point' to the west.  The shadow of the op's car, in the photos clearly shows the car is on the western side of the road.