Shoebury Garrison, Essex, by Gladedale Homes of Epsom, Surrey Jeremy Gates visits an Essex development on the site of a weapon testing facility and finds that the developer&’s &“two-speed&” approach to the scheme is paying dividendsBuilders who consult the map to study the northern shore of the Thames Estuary above Southend-on-Sea may receive a disconcerting message. &“Danger Area&” says The …