Banksy has claimed responsibility for a new artwork in Port Talbot, Wales, which appears to make reference to the town's industrial heritage.

A video posted to his official Instagram account on Wednesday afternoon shows close-ups of the finished piece which appeared on the outside of a garage overnight.

Soundtracked by the children's song Little Snowflake, the camera focuses on the painting, which shows a child dressed for snow playing in the falling ash and smoke from a fire in a skip, before ascending to show the nearby steelworks which loom over the town.

"They've not dropped a Banksy on us have they?" asks a man, apparently a local resident, at the end of the video.

The video was captioned with the simple message: "Season's greetings".

The owner of the garage in the Taibach area of the town, Ian Lewis, 55, a steelworker for the town's Tata Steel steelworks, said he first saw the artwork when images began to spread on Facebook on Tuesday evening, and had been guarding it ever since.

The father-of-one said: "At first I didn't really think much of it. I didn't even know if it was my garage. But then I had a look and saw it was.