London Lifeboat Day is the biggest fundraising day of the year for the four London RNLI branches. It also raises much needed awareness of the charity's four lifeboat stations - two of which are the busiest across the RNLI's entire network.
Tower RNLI lifeboat station, situated at the heart of the capital on a floating pier in the river below Waterloo Bridge, is the busiest in the whole of the UK. They launched 499 times last year rescuing 105 people.
Chiswick is the next busiest, with 221 call-outs last year and 97 rescues.
More top news
Rob Young has run more than a marathon a day for the last 12 months.
The hospital where the Duchess of Cambridge is due to give birth has had a superbug outbreak.
The London Marathon brings together thousands of people raising money for charity - not to mention some rather unusual costumes.