Apparently a new avoiding slip from M25 E/B to A10 N/B is being constructed.

https://highwaysengland.co.uk/our-wo...-improvements/

But my question is about what is (or was) there before the work. For
years there has been a weird lay-by on the northbound A10 just north of
the M25, weird because you can only get into it by stopping on the dual
carriageway at the end and reversing in. There are usually lorries
parked in the cul-de-sac part, usually placed so that you would struggle
to reverse a normal car past them, even if you weren't worried about
cars on the dual carriageway crashing as you reversed. What is this? Was
it originally built as part of an earlier plan to build an avoiding slip
that got cancelled? Was it originally a normal lay-by whose entrance
somehow got obliterated?

It might have been removed by now, but Google still shows it.



--
Basil Jet recently enjoyed listening to
2000 - Heliocentric - Paul Weller