Six celebrities and a high-profile yacht skipper who set sail from Belfast, Northern Ireland, for a five-day charity challenge dubbed ?Hell on High Seas? arrived in London on Friday night in a blaze of glory.

Host of BBC?s The One Show, Alex Jones, along with fellow presenters Angellica Bell, Ore Oduba and Suzi Perry, as well as comedians Hal Cruttenden and Doon Mackichan sailed a Volvo Ocean 65 monohull yacht skippered by Ian Walker, the first British captain to win the Volvo Ocean Race. Other well-known professional sailors onboard included Team SCA?s Dee Caffari and Sara Hastreiter, Walkers? Abu Dhabi Ocean Racing crewmate Phil Harmer, Dongfeng Race Team?s Graham Tourell and Volvo Ocean Race meteorologist Gonzalo Infante.

Over five eventful days and 800 nautical miles, the celebrity crew faced gale-force winds, 10-foot waves that nearly capsized the yacht, seasickness and sleep deprivation on the way to raising over ?1m for the Sport Relief charity. They also spent a night sheltering from the storm in Plymouth Harbour and received a surprise visit from a UK Coastguard rescue helicopter. Footage and recaps of the Sport Relief crew?s adventurous trip can be found below.

On arriving in London on Friday, 11 March, just after sunset, the crew celebrated by setting off flares.

Suzi Perry tweeted the photo at right, saying, ?Just a regular Friday night under the bridge!?

The celebrating followed what BBC One Show presenter Alex Jones described as an ?horrific? night of sailing.

?We came up against some terrible weather conditions as we sailed around the south coast of England ? it was a new level,? she told Lorraine Kelly on her ITV morning show.

?I can only describe it as being attached to a waltzer for 24 hours. The waves were so high and we were bumping on every wave. It was a tremendous experience but absolutely terrifying.

?This morning the sun came out and it was beautiful but it was a horrific night last night,? Jones added.

Last night (10 March), during a routine training exercise, the UK Coastguard search and rescue helicopter based at Lydd dropped in for a surprise visit to the Sport Relief Hell on High Seas yacht, just off the Kent Coast.

The Yacht Master gave permission over the radio for winchman, Garry Stewart to be lowered on board, where he was welcomed with a round of applause by BBC TV Presenter Alex Jones and a crew of celebrities in the midst of their 1,000 nautical mile voyage in aid of Sport Relief.

The five man helicopter crew were completing a routine night deck training exercise which involves winching the winchman onto decks of vessels at night. During the course of the evening, the winchman?s skills were tested on two vessels ? the first was a fishing boat and the second was the Sport Relief yacht ? which brings additional challenges because the masts are especially high.

Winchman Garry Stewart said: ?The crew on board the yacht were very enthusiastic. I landed onto the port side of the yacht where I was greeted by a round of applause from Alex Jones, Ore Oduba, Doon Mackichan; it was a great moment. Once boarded I came off the hook and we had a quick chat about their challenge which they seem to be really enjoying. They were incredibly receptive to my visit and it was all very professionally handled. On departure they thanked me for the service we provide and for keeping them safe at sea.?