Chevvron, are you sure about Siddeley Green? Firstly I think that the spelling should be Sidley, which is a district of Bexhill, but secondly I can find no other reference to an aerodrome either of that name or generally in Bexhill or the surrounding area (other than, obviously, Hasting Pebsham). The only aerial activity in Bexhill, to which I can find reference, are the visits of Cobham's air circus, which were at Little Common, Bexhill, in 1933, 1934 and 1935. But if you can find the map again, and thereby shed more light on this issue, I'll be most grateful.