Customers queueing at Greggs break out into impromptu flashmob

Customers at a popular sandwich shop were treated to a dance

Greggs is a popular restaurant for Stockton residents to pick up a sandwich or a tasty pastry for breakfast.

Customers were in for a surprise when other people standing in queue spontaneously started dancing to the beat of a drum and a saxophone, reported NY Times.

A video of the incident shows the public's reactions when a line of people - including a woman with a pram and a man in a high-vis vest started performing a choreography on the sidewalk.

“I’m just coming out of M&S right at the end of the video and initially wondered what was going on."

Lynn Donnelly, NY Times.

Getting a sandwich turned into an adventure

The group of dancers performing in Wellington Square as part of a string of flash mobs around the town center promoting the Stockton International Riverside Festival.

A Facebook group of residents called We Love Stockton Us shared the video, which has become a huge hit.

Read more about the Stockton International Riverside Festival on our Twitter account @amomama_usa.

Flash mobs celebrate art festival

There will be flash mobs taking place each day all over the town until the end of the festival, taking art music and dance to the streets.

The Stockton International Riverside Festival is an annual outdoor arts festival in Stockton-on-Tees, England.

Famous festival takes art and music to the streets

The festival was started in 1991 by local artists and musicians, but now host artists from all over the UK and the USA.

The Stockton International Riverside Festival has grown over the years into an internationally acclaimed event that attracts thousands of visitors to the town. It is considered one of the top family summer festivals in the country.

Greggs enjoyed the hype and the extra publicity the dancing customers provided to the popular fast food restaurant.