A new craze sweeping the world involves knitters creating huge wool creations to cover public property such as trees and signs etc.
They then take photos of their colourful "art" and post them on internet sites for fellow knitters to view and comment on.
One of the most ambitious pieces of work saw a woman spend an entire week covering a disused single decker bus in colourful swatches.
The phenomenon, called Yarnbombing, is thought to have originated in the US but knitters are now beginning to cover British streets in woollen 'tags'.
Quite often dozens of balls of coloured wool are used to make huge sleeves or cosies which are then stitched onto a fixed object, sometimes done under the cover of darkness.
Artist Sarah Hardacre, 31, from Salford, Manchester, says: "Yarnbombing is all about using the street for making art.
"I have knitted cosies for trees and even covered an entire garden shed in knitted squares before – it certainly put smiles on peoples faces.
"It is about the community taking pride in their surroundings and making it look nice and colourful.
"Yarnbombing is easy to do and can catch the imagination and creativity of so many people."
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