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The royal is addicted to the music of bands including Megadeth, Slayer, Metallica and Anthrax, according to actor Dominic West.

Dominic, 44, said it was the only music that Harry, 29, would listen to on their recent Walking With The Wounded expedition to the South Pole.

He said: “Harry has a terrible selection on his iPod. It is the sort of thing soldiers listen to. Hardcore thrash metal.”

But Dominic, star of The Wire, said the Prince, who has flown Apache helicopters in Afghanistan, showed real talent when it came to keeping morale high with a string of “dirty jokes”.

He said: “Harry told eye-wateringly rude jokes, which for a non-soldier like me was quite shocking.”

Dominic was a celebrity patron of Team Commonwealth with the Prince, one of three teams battling to the South Pole to raise cash for the charity Walking With The Wounded.

The actor also revealed that Harry showed he had great skills with using a shovel on the expedition.

“We had to dig a loo every time we set up camp,” he said. “He did one with castellated sides and a flag pole. He must have spent about 40 minutes making it and you’re sitting there thinking: ‘This is a real royal flush.’

“I remember thinking he did art A-level and you can tell he is artistic.”

Dominic suffered mild frostbite on one of his cheeks and team-mates suffered frostbitten fingers and ears.

But no-one needed surgery when they arrived home.

Dominic said Prince Harry was a brilliant addition to the trip. He added: “It was cool having Harry there because he was very much part of the team.”