Richmond Council has installed a high-tech messaging speaker at Teddington Lock, a popular spot for swimmers during hot weather. The speaker is triggered when CCTV operators spot individuals preparing to jump into the water, broadcasting a 17-second safety warning.
How the system works
The speaker delivers a pre-recorded message: “Attention. You are being monitored by CCTV. Jumping from these bridges is extremely dangerous. Hidden objects, strong currents and shallow water can cause life-changing injuries or death. Climb down immediately and do not jump. The relevant authorities have been notified.”
This initiative is part of a broader effort to reinforce warnings about cold water shock, strong currents, shallow water, and hidden debris at the lock.
Official response
Councillor Jim Millard, Deputy Leader of Richmond Council, emphasized the danger: “On hot days, the river can look really tempting. But jumping into the Thames at Teddington Lock is extremely dangerous and can put your life at risk in seconds.”
He added, “This new speaker helps us get clear safety messages to people at the point they need to hear them, and we hope it will make young people stop and think before taking a risk. Parents and carers also have a vital role to play. Please speak to young people about the dangers of jumping into the river and remind them that no quick dip is worth risking their life.”
Previous warnings
In June this year, Richmond Council’s Facebook page shared warnings from multiple authorities. Matt Allchurch of the Teddington RNLI noted that “cold water shock can affect even the best swimmers.” Commander Rob Davies from the London Fire Brigade warned that “hidden objects, rocks, and glass can be just beneath the surface.” Brian Thomas of the Environment Agency highlighted that water quality varies and that “bikes and even shopping trolleys” have been found in the water.
Tragic history
In 2023, 14-year-old Brian Sasu from Feltham died after jumping from a nearby bridge at Tagg’s Island, which is structurally similar to the one at Teddington Lock. This incident underscores the critical need for such safety measures.
Anyone who sees someone in difficulty in the water is urged to call 999 immediately.



