A scarce old vintage 1940's era St John Ambulance Brigade "Home Front" cloth badge in good condition measuring 2 1/2 inches across. 
'The St John Ambulance Association' was founded in 1877 to provide first aid training.
In 1887 'The St John Ambulance Brigade' was founded to provide uniformed medics at public events.
'The St John Ambulance Brigade' and 'The St John Ambulance Association' merged in 1968 to form the 'St John Ambulance'.