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.
More top news
An inquest has heard Charlie Jermyn died just 30 hours after he was born because he was not given the right antibiotics.
A British traveller was kicked out of Thailand by border officers after using pages of her passport as toilet paper when she was drunk.
Liverpool's owners have performed a U-turn on proposed ticket increases following a mass walkout of fans at weekend's Premier League match.