We've seen this exact scenario before here, but not sure if it was on the now defunct Pepipoo or here. Trouble is your posted video comes up far too small to see properly. Please repost it so it's larger.
The last case seen, it was clear no contravention occurred because the car turned round in an off-carriageway car park. However, I don't know how that one turned out.
Here is a more recent case on London Tribunals Statutory Register.
224007474A
and another
2220103175
However, one must be careful to completely leave the road, and this includes the footway.
2220083861
and another refusal
2210796064