Westpoint has issued an apology to anyone who was caught up in traffic problems following last night's Florence And The Machine gig.
Some drivers had to wait up to two hours to exit the site following the performance, leading to a series of complaints.
In a statement released on Facebook, venue bosses said: "Westpoint would like to offer our apologies for the delay in exiting the site after the Florence and the Machine concert. There were a number of factors that occurred that, combined, made exiting a very long process.
"To explain - the recent wet weather meant that we endeavoured to park as many cars on hard standing as possible. There were a higher number of single occupancy vehicles than normal for this type of event. This coupled with the first point meant that our traffic marshals tightly parked as many vehicles on hard standing as they could.
"On exiting the site some vehicles that did get parked on grass had to be pushed or towed out, therefore taking some traffic marshals away from their posts.
"It became clear, once all cars were on site, that because we had to park cars tightly together, it was going to take longer then normal to exit them
"The factors above mean that it took up to two hours to exit the 2,680 cars from site. This is not the norm and all parties concerned are now working together to ensure we reduce the chance of this happening again."
The gig on Tuesday night at Westpoint was the first of Florence and the Machine's six-date UK England and Ireland Ceremonials arena tour.
All 8,000 tickets sold within a month.