To tread the streets of Viking Dublin with entertaining commentary along the way, Hidden Dublin Walks runs walking tours of the city, relaying its often-brutal beginnings.

BBC: Dublin's Viking heritage

The walks prompted vivid memories which he included in his blog Walking on Planet C which is a frank and often uncomfortable account of life in the shadow of a potentially fatal illness.

BBC: Nile Rodgers' battle with prostate cancer

The guides of the independent London Walks company have earned the city's premiere professional qualification for walking tours, the Blue Badge.

BBC: Walking London��s Olympic sights

The Ramblers charity, which promotes walking for health and pleasure, wants to get people to go on walks of five miles or less.

BBC: Quarter of adults walk just an hour a week, survey finds

The scene, like much of the better moments in the film, walks a thin line between comedy and outward embarrassment, but it's a very real line to be walking.

CNN: Review: 'Slums of Beverly Hills' on-target with comic realism