St John Ambulance cadet Joshua Vickers from Thame was invited to Buckingham Palace for his work with the charity.
The 14-year-old was recognised by the Princess Royal on March 28 for completing the Grand Prior Award, which is the highest a cadet can achieve.
He has completed three years with the organisation and studied 24 different subjects.
Joshua said: “Visiting Buckingham Palace and meeting HRH The Princess Royal was an amazing experience.”
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