Play to tell tale of surprise Banksy that appeared on garage in Port Talbot

Season's Greetings, which was removed from the town much to residents' sadness, is focus of touring show

It materialised just before Christmas seven years ago, turning the industrial town of Port Talbot into a destination for culture lovers, but - after much wrangling and soul-searching - was whisked away on the back of an art dealer's lorry and is more than 1,000 miles from home.

The saga of Port Talbot's Banksy mural, Season's Greetings, is being told in a new play opening next week, prompting a flurry of reminiscences and recriminations about what happened after one of the world's most famous street artists paid a visit to south Wales.