I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission requirements unknown.
Lovely spot along the River Nene. I parked in the lay-by at 52.240527, -0.759537, There's a wide track (public footpath) that runs across the quarry works from there straight to the lock. Was really quiet, a few kayakers on the river and that was about it. There was a Jubilee fly past off in the distance when I was there, but I was well south of the restricted zone.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 03/06/2022. It remains the responsibility of any pilot to check for any changes before flying at the same location.