A Rugby World Cup flag bearer braved simulated wind, rain, snow and fog at a training camp to prepare for the worst the British weather might throw at him.
The 15-year-old was one of 12 flag bearers from across the country to be put through their paces at a training session organised by tournament sponsor Emirates and its rugby ambassador Ben Foden.
England international Foden said: "Walking out of the tunnel for an international match you experience a number of emotions – excitement, anxiety and pressure at the enormity of the game.
"The last thing on your mind is the weather and then you get hit in the face with any one of the four seasons.
"Knowing the inconsistency of the British weather, today's training is preparing the Flag Bearers for their moment on the international stage, making sure they feel confident no matter what Mother Nature chucks at them on the day."
Harry was given the honour of leading England out after being selected by his teachers for his outstanding contribution to Isleworth & Syon School and his love of rugby.
"I couldn't believe it when I was chosen. To walk out in front of a packed Twickenham Stadium was amazing and something I never thought would happen!"