Paddock is the codeword for an alternative Cabinet War Room bunker for Winston Churchill's World War II government, located at 109 Brook Road, Dollis Hill, northwest London, NW2 7DZ; under a corner of the Post Office Research Station site.

The facility included offices for the prime minister and Cabinet, but no living accommodation.

It is semi-derelict, with original equipment abandoned and rusted, and a certain amount of water ingress which is kept at bay by an electric extraction pump.

The bunker is now owned by Network Homes, an affordable housing association which is responsible for the properties now occupying part of the former research station site above.

It used to be open to the public two or three times a year,[1] with free guided tours provided by volunteers from the Subterranea Britannica organisation.