I have just added this to the map of places to fly your drone at Drone Scene:
Land owner permission not required.
This is the floodplain between the New Bedford River and the Old Bedford River. The construction of these was carried out in the 1600s by Dutch drainage engineer Cornelius Vermuyden in order to drain the Fens, making the suitable for farming. The floodplain is a SSSI, but would appear to relate to plants and riverlife.
The originator declared that this location was not inside a Flight Restriction Zone at the time of being flown on 04/02/2019. It remains the responsibility of any pilot to check for any changes before flying at the same location.