[jambutty]

Originally Posted by Neil

Did you know that the law does not say you can't park on the footpath? It is however illegal to drive on the footpath. Then again the law is an ass.

It is illegal to park causing an obstruction though.

244
You MUST NOT park partially or wholly on the pavement in London, and should not do so elsewhere unless signs permit it. Parking on the pavement can obstruct and seriously inconvenience pedestrians, people in wheelchairs or with visual impairments and people with prams or pushchairs.

243
DO NOT stop or park
opposite a traffic island or (if this would cause an obstruction) another parked vehicle.

The question is what is “causing an obstruction”? I would suggest that at the very minimum the gap between cars parked on either side of the road should be wide enough to allow the standard width vehicle, like an emergency vehicle or an HGV, passage without having to slow down to a crawl.