Senior police officers plan, organise, direct and co-ordinate the resources and activities of a specific geographical or functional area of generalised or specialised police work. Senior officers of the British Transport Police direct the specialised police service for the railway network across Britain.
Promotion to the rank of inspector can be by qualifying examination. There are no qualifying examinations to ranks above inspector; promotion is by selection only. There are accelerated promotion schemes available. All police forces have age restrictions and medical requirements.