I found this beach ( see pic) about a mile north of Skegness and it was pretty much deserted even though it was the middle of August,
There is a free carpark opposite the Golf Club/Hotel ( I was staying there for a couple of nights and used their car park) and it a short walk to the beach.
Post code PE25 1DN is the Golf Club.
And yes, I am sitting down using a B mid-vent but should have used a vented!
Thanks for the info. That looks like a tidal area which might explain why it was deserted in August. I think that we ended up flying nearer to the M1 corridor that year...