The festival began on Friday and was due to continue until Sunday, but a decision was made by organisers to cancel the remainder of the event after the incident .
“We are working with the emergency services, police and the Health and Safety Executive as they establish the circumstances surrounding today’s incident,” the organisers said.
“We are incredibly grateful to everyone who responded, and to our teams and community for the care they have shown one another.”
Christian parent support charity ParentFuel said its people at the festival were all safe.
“We cannot praise the BCF (Big Church Festival) team enough for the way things have been handled,” they said on social media on Saturday morning.
“We are currently sat in the volunteer tent with a brew in hand, worship music being played and the warmth of chatter around us.”
The charity said it was a “freak accident”.
“Life is so precious and so, so short. This weekend brought that ever closer for us all,” they added.