Sittingbourne Speedway - I always thought it was Iwade Grass Track?
Not a grass track John, but a speedway track. it has always been Iwade, but a few teams have run there. The first being the Iwade Colts, then for a time Sittingbourne Crusaders and Kent Crusaders, and some amateur teams such as the Dragons.
Pre covid it was back to its original purpose of a training track, and occasional one off meetings; i.e. The Ivor Thomas Memorial Trophy. (The original founder with his brother Barry Thomas, Hackney and England rider.)
Its now known as the Iwade Speedway Club, The Old Gun Site, Old Ferry Road Iwade. You can find some old videos of the track on youtube.