The Olympics are just over two weeks away, but there are real fears that the biggest sporting event in the World could become a complete washout.
The downpours, that have ruined the summer of 2012 so far, are beginnning to cast doubt over whether there's a plan in place to cope with the wet weather.
Fifty thousand people a day are expected to go to Hyde Park to watch the games on the Big Screen, but already one big concert has already been cancelled. Simon Harris looks at whether the weather will ruin the games.
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Paramedics were on standby outside the police cordon as armed officers stood by the property.
A team of researchers has taken samples from the ten busiest London Underground lines to work out which are the dirtiest.
The action comes on top of an emergency timetable which has seen hundreds of trains a day being axed.