Titanic expert Tim Maltin said he is “very worried about the souls” on board the missing submersible.

Mr Maltin said on BBC Breakfast: “If it’s near the Titanic it would be easier to find, but the problem is of course you can’t do a ship-to-ship transfer even, the pressure is absolutely intense.“It’s nearly two miles miles down, it’s pitch black.“So I also am very, very worried about the souls who are on board.”