Officers and soldiers of the British Armed Forces were able to grow their beards while serving in the army, in a political change that required the approval of the King. But the beards worn by their owners must be polite and subject to review, as the chief non-commissioned officer in the British Army explained in a video message to the troops.
According to this policy, only a “full beard” is permitted, with a length between 2.5 and 25.5 millimeters (1 inch)