 The uniform of St John Ambulance in Canada, England, Ireland, and Wales was derived from the uniforms of London's Metropolitan Police Service; using similar jackets and trousers with different buttons, badges, and a cap with a white band and belt-mounted items relevant to first-aid work.Conversely, the ceremonial uniform for St John Ambulance in Malaysia, and St John Singapore uses a white tunic and black trousers; derived from the British Army's warm weather ceremonial uniform.Generally, the organisation's ceremonial uniform is not used for daily medical and first-aid work, with the various national St John Ambulance organisations issuing a variety of occupational uniforms.