This afternoon The Swarm at Thorpe Park and lost a bolt whilst the ride was open to the public. Its believed that due to the heat wave that we are currently going thorough that the steel is expanding causing bolts to have a lot of tension in them. The bolt came out from above the baggage room, the ride has been closed whilst engineers examine the damage. No guests where injured during the incident thanks to the safety nets above guest areas.
EDIT: After 4 hours of being down the ride has now reopened with the bolt being taken out of the safety net.