A team of special constables rescued 25 people stranded on an island by flood water by giving them piggybacks.
The flood was too deep to drive across, so the specials carried the stranded group through the water, which was about 18 inches deep with a strong current.
Special Sergeant Milad Amini said: "The good news is that all those stranded were piggy-backed to safety from the flooded area and were delighted to be able to get home as a result.
"On the downside, all of our uniforms and boots were very wet and we had to spend the next 40 minutes drying out back at the police station before continuing with our shift."
Eel Pie Island is on the Thames and is home to a nature reserve, boatyard and several artists' studios.
It is private but opens to the public twice a year.