Christopher Ringsell, creative director at House 337, said: “Per Ardua Ad Astra” – Through adversity to the stars. This is the motto that has served the RAF since it was formed in 1918.

Her Majesty ends her message with the Latin motto of the RAF, Per Ardua ad Astra, which means "through adversity to the stars". Sunday 1 April 2018 19:51, UK.

The exhibition, the artist's personal tribute to the legacy of the RAF, will be on display in the Arboretum’s Remembrance Centre from March 30 to June 30.