This group portrait (currently on eBay) shows a number of ARP/CD personnel and a boy scout. The lady sat in the centre at the bottom is most interesting. She is wearing the standard issue Pattern 71 tunic with a beret (not usually seen). Her insignia is very interesting: she is wearing an instructor's badge on her collar, a St John qualification on her right breast pocket and it would appear she also has the Life Saving badge on her lower left forearm (a most unusual place for this badge). Given her central position she is probably the most senior person in the group.
The gentleman next to her has five war service chevrons so this dates the photo towards the end of the war. His breast pocket badge is the red on black ARP type (rather then the more usual yellow on black CD version).
The majority of the other ladies have the Pattern 47 wrapover with red lined collars. They also are wearing the felt hat.
News about interesting insignia, ARP related info and period photos that turn up.