Two competitors from Brentford and two from Chiswick are hoping their skills gleaned on the Thames will lead to medals in China after being picked for the Beijing Olypmics rowing and gymnastics teams.
The two from Chiswick are both male fours rowers - Peter Reed and Andy Triggs-Hodge.
Reed, a former Oxford Blue, was part of the men's four which won gold at both the 2005 and 2006 World Championships.
In fact, Reed and co were unbeaten for 27 consecutive races until Lucerne 2007, while they finished a disappointing fourth in the 2007 World Championships in Munich.
In the 2008 World Cup series, they have finished first, eighth and second, so they are hoping the Olympics will see them return to top form.
Triggs-Hodge was also part of the successful men's four at the 2005 and 2006 World Championships.
He won his first senior international vest in 2002 and was part of the eight that won bronze at the 2003 World Championships in Milan.
He took up rowing while at the University of Staffordshire, then like Reed, went to Oxford, where he was part of the successful 2005 crew.
The two from Brentford are both female rowers, with Annie Vernon taking part in the quad scull and Jess Eddie the eights.
Vernon - who was inspired to take up the sport by her father, who was also a rower - is the reigning
World Champion in the women's quad, winning gold in Munich in 2007.
The 26-year-old rowed in the women's Blue Boat at Cambridge University before breaking into the GB squad at U23 level in 2004.
Since then she has gone from strength to strength and is a real hope for a medal in Beijing.
Eddie, meanwhile, is double World U23 Championships bronze medalist, while she won a bronze at the 2007 World Rowing Championships.
She has been rowing since the age of eight since taking it up at St Leonard RC Comprehensive in Durham, where she combined the sport with rugby and netball.
In the 2008 World Cup series, she recorded fifth, sixth and third place finishes.
Meanwhile, everyone at Heathrow Gymanstics Club will be cheering on Rebecca Wing in the gymnastics.
Wing, who turns 16 in two weeks, trains six days a week under Vince and Michelle Walduck and Natalie Ilienko Jarvis at the club in Green Lane, Hounslow.
She burst onto the scene in 2004 with gold in the beam and all-round silver at the British Espoir Championships.
Wing then competed for the British team which came sixth in the European Championships in 2006, having won silver at the British Junior Championships that same year.
Last year saw her make the British team for a number of internationals, as well as the World Championships.