4:30am 28 June 2009
10 years ago it probably would not have been possible to hold this event in the River Thames because of pollution. The Thames has improved considerably and previous races have also featured elite athletes such as Karen Pickering. The 2009 event is fully subscribed.
There are plans to cover the 2009 swim live on www.regattaradio.co.uk. If you are attending the regatta, the station broadcasts 24 hours a day on 87.7FM within an 8 mile radius of Henley-on-Thames.
You can view photos from the 2008 event here