Organisers of the We Are FSTVL event in London have apologised after several people were injured following chaotic scenes caused by lengthy queues.

Some festival-goers collapsed after being forced to wait for more than three hours to be let into the electronic dance music festival in Upminster on Saturday. It is thought the queues were caused by a lack of wristbands.

Videos posted on social media also appear to show crowds dismantling barriers and rushing past festival staff to gain entry.

In a statement We Are FSTVL organisers Lime Green Events said five people were hurt after “unforeseen technical difficulties” at the wristband exchange. It is thought around 60,000 people attended the event.

A statement on the We Are FSTVL Facebook site said: “We are sorry. We always strive to deliver our customers a great event each year. This year that wasn’t the case for everyone on Saturday, and that pains us immensely.

“Whilst we managed to rectify the issue and finish on a high on Sunday, we accept queuing times on Saturday were unacceptable.

We hate the idea of letting any of you down. We want anyone who was affected to please get in touch with us and we will reply back personally as quickly as we can.”