Pray for the safe return of: Paul-Henri Nargeolet, Stockton Rush, Hamish Harding, Shahzada Dawood, Sulaiman Dawood

One of Pakistan’s richest men and his teenage son are among the five missing in the submarine that set off to see the Titanic before losing all communication thousands of feet underwater, it was revealed today.

Shahzada Dawood, 48, a UK-based board member of the Prince’s Trust charity, and his son Sulaiman, 19, were in the tiny underwater craft when it lost signal in the Atlantic Ocean, 370 miles off the coast of Newfoundland, Canada.

Their family, including Shahzada’s wife Christine and daughter Alina, are now enduring an agonising wait for any news of the pair – hoping in vain that they could  be found before the oxygen onboard runs out in around 50 hours.

‘We are very grateful for the concern being shown by our colleagues and friends and would like to request everyone to pray for their safety,’ the Dawoods said in a statement.

The family are among the richest in Pakistan, but have strong links to the UK and Shahzada is believed to live in a Surrey mansion with Christine, who works as a life coach, Sulaiman and daughter Alina.

Shahzada is the vice chairman of Engro Corporation, which makes fertilisers, food and energy, as well as the Dawood Hercules Corporation, which makes chemicals. He was born in Pakistan but moved to the UK where he studied law at the University of Buckingham.