The group 's objective is to `` restrict the development of Stansted Airport within tight limits that are truly sustainable and , in this way , to protect the quality of life of its supporters over wide areas of Essex , Hertfordshire and Suffolk , to preserve local heritage and to protect the natural environment . '' The group 's stated objective is `` To contain the development of Stansted Airport within tight limits that are truly sustainable and , in this way , to protect the quality of life of residents over wide areas of Essex , Hertfordshire , Suffolk and Cambridgeshire , to preserve our heritage and to protect the natural environment . ''