Does this provide any more info on AA sites around Sheffield?
http://www.anti-aircraft.co.uk/HAA_gun_sites_map.html
Doesn’t work for me on iPad, as it needs user to hover mouse pointer over locations....
Before he was called up into the RAF my Dad, as a member of the Home Guard, manned one of the "Z" rocket batteries on Shirecliffe ( He is on one of the battery photos). He always said that when fired they did more damage ( shrapnel) to the City than any intruding Luftwaffe aircraft.