SCHOOL children across the UK will be taking to the streets this week as they take part in National Walk to School Week.

National Walk to School Week, which runs from May 21 to May 28, aims to celebrate how walking, rather than driving, to school can make a big contribution towards cutting down on pollution.

Run in partnership by TravelWise and Living Streets and supported by the Department for Transport and Transport for London, the campaign asks parents to leave their car keys at the door and walk to school with their children.

The Walk to School co- ordinator Andrew Fielding, said: "Walking to school isn't just great for the environment, it's great for you too."

The school run is one of the UK's worst offenders when it comes to pollution.

The short, stop-start journeys with cold engines are the most polluting.

Every car pumps out carbon monoxide and other compounds which are not only bad for the environment but for our health.