hey all, any thoughts on this?
Yes.
From the latest GSV view of the approach to turn left into Dawlish Road, (April 2022), shows the signs are side on, and there is no advance warning of the restriction. In addition, the nearest sign is high up so likely to be missed by a motorist looking out for hazards at the left turn.
Only thing is that with GSV over 2 years ago there may be advance warning signs there now, but only you can tell us. If there are no advance signs, you have a reasonably good case for an appeal to London Tribunals on the basis of inadeqate signage. The council will reject anything you submit, because they are only interested in the money.
So you have to be prepared to forego the discount.