The Department for Work and Pensions (DWP) rejects the "bedroom tax" tag and says the reality is that "a spare room subsidy" has been removed from social sector tenants.
A DWP spokesman said the new regulations are lawful and adequate steps have been taken to safeguard people with disabilities.
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The country's counter-terrorism forces have regained control of the facility.
The commissioner of the Metropolitan Police has said he cannot promise the public an attack will not take place.
The showers are likely to be particularly heavy across northern parts of the country.