Southend has always had a narrow runway; my memory says 30m but Google says it's now 37m and perhaps it always was.
In the past this led to some hairy landings as a result of the unusual impression of distance from the threshold. But the airport's precarious existence over the last 3 decades hasn't been much affected by that particular factor, in among all the other reasons for avoiding it, some of which have now been alleviated (but not all).