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AP 1358, CHAP 1
0126. When wearing uniform outdoors, on or off base, headdress is to be worn by all personnel in the following manner:
a. No 1 SD Hat. The No 1 SD hat is to be worn so that the bottom of the hat is 25mm above the eyebrows, the front of the hat level and the badge positioned centrally. The chinstrap is to be taut and positioned to cover the blue seam between the hatband and peak. RAF Police personnel of the rank of WO and below wear a white-topped SD Hat when wearing all variations of No 1 or No 2 SD. The No 1 SD hat is never worn with CS 95.
b. Forage Cap. The forage cap, which is an optional extra at own expense, is worn tilted to the right so that that front edge is approximately 25mm above the eyebrows and the side edge is approximately 12mm above the right ear. The material is blue/grey worsted barathea of standard styling for wg cdrs and below; for gp capts and air officers the cap is piped in Minerva blue. The forage cap is never worn with CS 95.
c. Beret. The beret is to be worn so that the black band is horizontal around the head and 25mm above the eyebrows. The surplus material is to be pulled down over the right ear and the badge clearly displayed in a position directly above the left eye. The adjustment ribbon is to be secured with a knot and the surplus ends hidden from sight.
d. Turbans. Officers and airmen of Sikh religion may wear turbans of the approved Service pattern and colour, instead of uniform headdress. The appropriate cap badge is to be fitted centrally on the turban with its base at the apex of the triangle of the headband. When necessary to wear specialist headgear such as combat helmets or flying helmets the turban has to be removed and the patka (mini turban) may be worn.
e. Hijabs. Muslim females may wear Hijabs of the approved pattern and colour under their uniform headdress except when operational, training or health and safety considerations dictate otherwise. It is worn without cap badge under the hat outdoors and without hat indoors. The hijab is to be worn in such a way that rank slides are visible at all times.