In Pictures: Events mark 100 years of the Royal Air Force

The Queen offered "heartfelt congratulations" to the Royal Air Force to mark its centenary.

It was 100 years ago on April 1 1918 that the Royal Flying Corps and the Royal Naval Air Service merged to create the RAF.

A series of events were being held to mark the milestone, including a baton relay.

Aircraftsman Adam Wood, 16, is handed the baton by Royal Air Force veteran Air Commodore Charles Clarke outside the Royal Courts of Justice in London (Steven Paston/PA)
Aircraftsman Adam Wood, 16, is handed the baton by Royal Air Force veteran Air Commodore Charles Clarke outside the Royal Courts of Justice in London (Steven Paston/PA)
Aircraftsman Wood ahead of the Baton Relay Launch (Steven Paston/PA)
Aircraftsman Wood ahead of the Baton Relay Launch (Steven Paston/PA)
Guests inside the Royal Courts of Justice ahead of the Baton Relay Launch and First Leg (Steven Paston/PA)
Guests inside the Royal Courts of Justice ahead of the Baton Relay Launch and First Leg (Steven Paston/PA)
RAF centenary
RAF centenary
Former Spitfire pilot Squadron Leader Allan Scott takes to the skies (Stefan Rousseau/PA)
Former Spitfire pilot Squadron Leader Allan Scott takes to the skies (Stefan Rousseau/PA)
The Founders' Day Service at St Clement Danes Church in London (Steven Paston/PA)
The Founders' Day Service at St Clement Danes Church in London (Steven Paston/PA)
Air Chief Marshal Sir Stephen John Hillier gave a reading at the Founders' Day Service (Steven Paston/PA)
Air Chief Marshal Sir Stephen John Hillier gave a reading at the Founders' Day Service (Steven Paston/PA)

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