“It may sound suprising, but according to a 2007 report by Harry Snook, a barrister for the Centre for Policy Studies, there are 266 powers allowing officials to enter your home, and not all require a warrant. Those who can break in include firefighters, in an emergency, and police arresting a suspect. The Environment Agency can gain access without a warrant where there is danger of pollution or damage to public health.”
The Guardian, 26th February 2008
Source: www.guardian.co.uk