A politician's "spur of the moment" charity idea left her more than £14,000 down after promising £1 for every retweet she got on Twitter.
Tens of thousands of fun runners and amateur athletes set off in bright sunshine as the 32nd London Marathon got under way today.
An 18-year-old from London has now completed 6 marathons in 9 days. He still has 6 to go.
Stars of the London stage will come together this afternoon for carol singing and festive merry-making in support of this year's Lord Mayor of Westminster's charity, the Sir Simon Milton Foundation.
The carol singing will be led by the West End Gospel Choir, a collective of musical theatre singers who will perform a selection of festive songs.
There will be a live performance from the cast of hit musical Let It Be as well as special appearances from family shows The Snowman and Dinosaur Zoo.
The show kicks off in Leicester Square at 4pm.
A year after it started, homeless initiative StreetLink says it has had a bigger success in London than anywhere else in the UK.
The charity relies on members of the public to flag up rough sleepers in their area using their phone or the web, so they can be linked up with support services.
Out of the 4,000 people the charity has been able to help, a massive three quarters were in the capital. StreetLink says it has had 8,275 alerts from Londoners over the past twelve months.
The top ten boroughs for referrals to the service were:
Westminster - 861
Tower Hamlets - 558
Lambeth - 503
Hackney - 448
Camden - 423
Haringey - 375
Hammersmith and Fulham - 339
Hillingdon - 332
Islington - 326
Lewisham - 323
Hundreds of charity runners dressed as sumo wrestlers descended on Battersea Park today to raise money for Link Community Development.
Runners in the capital completed the entire five kilometre course in blow-up sumo suits. The money raised will go towards improving the quality of education for children in sub-Saharan Africa.
- Around 28,500 cyclists took part today
- In 38 years around 750, 000 riders have taken part
- They have cycled more than 40 million miles between them
- Riders have raised over £57m to go towards fighting coronary heart disease
The British Heart Foundation has thanked committed cyclists who turned out in force for the ride today.
Nancy Prior, head of events at the BHF, said: "The London to Brighton Bike Ride is a flagship fundraising event for the BHF.
"I'd like to say a massive thank you to all the cyclists and their sponsors for their support. Every penny you raise helps us fund pioneering research that supports heart patients and their families in their fight for every heartbeat.
She added, "We would also like to thank everyone who came to help at both the start in Clapham and the finish in Brighton. Our cyclists rely on the hundreds of volunteers who give their time to make the bike ride possible."
After months of preparation the wheels are finally in motion for thousands of cyclists taking part in the annual London to Brighton charity ride.
Nearly 29,000 are making the 54 mile journey this year, with proceeds going to the British Heart Foundation campaign against coronary heart disease.
The weather was gloomy, but spirits at the starting line couldn't be dampened. The riders set off from Clapham Common at staggered times from 6am.
Eight year old Lauren Richardson, accompanied by her dad Kevin, today begins her attempt to kayak 225 miles down the River Thames for charity. The thirteenday event will see them negotiate 45 locks and travel up to 27 miles a day fromthe source of the Thames to the sea.
The pair are aiming to raise money for Widehorizons Outdoor Education Trust which aims to give children adventures as part of their education. They will be camping each night and blogging on their progress.
A man from Ealing is taking his charity work to the next level, by cycling from Paris to London on a Boris Bike.
Michael Jardine will be joined by a team of injured service personnel on the mammoth journey next month.
Click here for more on the challenge.
Slough MP Fiona Mactaggart has donated £14,268 to Comic Relief after thousands of people retweeted her post on social networking site Twitter.
The Labour politician told her followers on Friday that she would donate £1.00 to the Red Nose Day appeal for every retweet the post received by 9pm.
"You have to stick by your word if you take a risk like that," she told ITV London.