A South London MP says it was “miraculous” that nobody was injured when a glass window fell from the sixth floor of a tower block in Colliers Wood.

A video circulating on social media shows the window smashing into pieces as it hits the ground.

Labour MP for Mitcham and Morden, Sionhain McDonagh, has written an open letter to the owners of the 18-storey Britannia Point.

In it, she branded the video “terrifying footage” and called for Criterion Capital’s “urgent response”.

Wimbledon Times: Workers fixing the window that fell from Britannia Point (photo: Stuart Neaverson)Workers fixing the window that fell from Britannia Point (photo: Stuart Neaverson)

Ms McDonagh wrote: “Miraculously, it is my understanding that nobody was under the glass when it fell and so no one has been hurt.

"It is indisputable that this is fortuitous and serious harm could have been caused.

“Please can you explain exactly what happened and how this incident occurred?

"It is imperative that an entire inspection of the building takes place, inside and out.”

In the letter, the MP alleged that there have been other issues in the block, including broken lifts and problems with the temperature in the building.

Ms McDonagh has also written to Merton Council and the Health and Safety Executive calling for the building to be inspected.

The incident is understood to have happened on Monday, and closed a stretch of the A24 for around 24 hours. 

A shocking video was posted to a local Facebook group and Tweeted out by new Colliers Wood councillor Stuart Neaverson.

Cllr Neaverson said: “Obviously residents are shocked about something like this happening in the heart of Colliers Wood.

"There are a lot of questions to be answered and I’ll be making sure Criterion Capital are doing everything possible to keep both residents in the tower and pedestrians safe.”

Merton Council has since issued a statement which confirmed the authority’s building control team has visited the site to ensure there are no immediate risks.

A spokesperson said: “[The building control team] will carry out a more detailed abseil survey as an immediate priority to check each window, and we have asked for this to be done urgently. 

"Resident safety is paramount and we are monitoring the situation with the owners.”

As a precaution, the area around the building was cordoned off on Tuesday night and is expected to remain in place while a survey is carried out.

Criterion Capital was contacted for comment.