UK Passport photo requirements (mainly hair)?

I'm sure the requirements are not that complicated but when you look at the list of 'must haves' and 'must nots' I think you will understand. The government has listed on their website the do's and dont's and I am putting a genuine link below: http://www.direct.gov.uk/en/travelandtransport/passports/applicationinformation/dg_174152

General photo requirements: Eyes must be open and clearly visible, with no flash reflections and no "red eye" Facial expression must be neutral (not frowning nor smiling) with the mouth closed Photos must show both edges of the face clearly Photos must show a full front view of face and shoulders, squared to the camera Photos must not show the subject looking over one shoulder (portrait style) or with head tilted to one side or backwards or forwards The face and shoulder image must be centered in the photo There must be no hair across the eyes Photos must reflect/represent natural skin tone Photos must be clear, sharp and in focus Photos with shadows on the face or background are unacceptable Photos must be taken with uniform lighting and not show shadows or flash reflection on the face and head Photos must show a plain, uniform, light grey or cream background. 5 - 10% grey is recommended as a background. Hats or head coverings are not permitted except when worn for religious reasons and only if the full facial features are clearly visible Black and white photos are not acceptable Where very young children are being supported, ensure that hands are not visible. We recommend that infants who are unable to support themselves are laid on a light grey sheet and photographed from above. Photos must not be manipulated, for example, by removing spots or softening lines, shadows, etc