Mark Scoular, a police officer and ex-Royal Marine who founded Commando 999, said that the Marines would not let the bad weather hamper their marathon challenge over Remembrance weekend.
"It is wet, but we will all be cheery and absolutely fine, I'm sure. It will be a good old pace but we are all looking forward to it."
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The lender, which is the worst affected by the PPI mis-selling scandal, said it has also set aside £150m for other conduct issues.