Photo is not clear enough to properly make out who is in it. Just some of the suggestions below:

Says John Horobin: Standing up left in white blouse-Marjory Layland (think she was head girl at one stage?)

To the left of her seated - dk boy

Sitting at the back facing the camera with only top and middle part of head showing-Una Flint?

Standing with blonde hair and scarf - Susan Slater - although Lesley Camp thinks it is Gillian Davison and herself next to her with dark hair and a knitted scarf.

Next to her standing dark hair - Eileen Dakin? OR Gillian Davison (fr Lesley Camp)

In front sitting looking at camera - Marilyn Calladine

Standing with scarf - Everard Longland

Standing behind him - David Deshmukh

Then Mr Forster

Photo from John Horobin