A Downing Street spokesman has told ITV News a "small logistical unit", including an unspecified number of troops, were paying £1 for showers while they were setting up the shower unit for troops staying at temporary living quarters at Tobacco Dock in east London.
However, the unit is now in place and the troops will be refunded, if they have not been so already.
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Police and emergency services are attending the scene.
Rebel-held east remains at risk while the pumping station supplying the western part of the city is once again in operation.
Police chief says the video can now be release without 'adversely impacting' the investigation.