The Prince of Wales and the Duchess of Cornwall visited one of Delhi's largest slums as a part of their India tour.
The royal couple visited the Katha Lab school, where the Prince received a 65th birthday cake, marking his birthday next week.
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The video, obtained by ITV News, shows scores of migrants desperately trying to board lorries in a restricted area within the tunnel.
Ex-Spitfire pilot Allan Scott, 94, said he was told off by the Queen when he first met her in 1943 when she was just 16.
Last minute preparations are going on at the Church of St Mary Magdalene where Princess Charlotte will be christened.