I sort of remembered it was something to do with Hammersmith Bridge. So hope I am forgiven for finding the following on the internet:The second hero of the bridge was Chiswick hairdresser Maurice Childs, who was using the bridge to walk home early on the morning of 29 March 1939. The Irish Republican Army had chosen Hammersmith Bridge as a target for a campaign of bombing on the British mainland, and that morning two explosive devices with timers had been planted to damage or destroy the structure. Childs’ account reports that he spotted an abandoned suitcase on the bridge, emitting smoke and sparks. The curious hairdresser opened the mysterious suitcase to find a bomb within. He flung the suitcase into the river, whereupon it exploded, sending up a plume of water. Shortly afterwards the second bomb exploded, knocking down some bridge girders and breaking some windows in nearby buildings. The bridge was only superficially damaged, and Mr Childs was later awarded an MBE for his actions. The two IRA bombers were captured, and received jail sentences of 20 and 10 years respectively. ...I remember hearing the bomb go off under the bridge just a few years ago. Fortunately at night and no one hurt.
Caroline MacMillan ● 6411d