A barbershop quartet from West Ealing did something on Tuesday morning that few people can claim to have done – serenade Philip Schofield while he brushed his teeth.

Four members from barbershop harmony club Capital Chorus , who make up a quartet called Apocappella, surprised the daytime TV legend while he was taking part in his live televised 24-hour charity marathon, which raised money for ITV’s Text Santa Appeal.

He started his challenge at 11am on Monday hosting This Morning, where he ended the feat 24 hours later. In between, the TV presenter and host of The Cube interviewed David Cameron, abseiled down ITV’s London HQ, presented the weather and appeared on Loose Women.

And at around 5.30am on Tuesday, he got a shock when he went into the toilets of the network’s South Bank studios to freshen up, only for Apocappella to spring their surprise.

John Beesley, a member of the quartet, said: “He needed to smarten up before his interview with the Prime Minister and what better than a barbershop quartet to serenade you? We were ushered into cubicles and he came in just after 5.30am. Then we were told when to sing and we burst out through the door.

“He was quite surprised, but you have to give him credit because he’d been going for 18 or 19 hours and he took it in his stride. He watched us in the mirror while he cleaned his teeth and shaved and we sung Good Old Acapella.

“They’d been springing surprises on him throughout the night and we were one of the surprises. He thanked us and said it was amazing what you found in the bathroom.”

The Apocappella barbershop quartet consisted of Mr Beesley singing tenor, Dave Howe singing bass, Khusro Khan singing baritone and Julian Nicholl on lead.