This is a pretty standard end of war 'stand down' photograph. The vast majority of civil defence personnel had these photos taken. There's nothing too surprising regarding insignia and uniforms but on the far right it looks like a gentleman has a different colour lanyard to the others. I've not seen this before and the colour may be a red lanyard whilst the others are old gold. I cannot determine the location from the area title alas.
News about interesting insignia, ARP related info and period photos that turn up.