World-leading wasp expert Professor Seirian Sumner of University College London believes the insects are queen wasps, who could be nesting in the lofts, outbuildings or the grounds around the park.
Alexandra Palace is surrounded by nature, positioned inside 196 acres of land in north London, and home to a range of different wildlife.
“At this time of year the queen wasps look for somewhere warm and dry so end up in places like this,” said the Professional Darts Corporation (PDC).
“When inside they are drawn to light and heat, therefore end up at the stage.”
Worker wasps typically die by November and December, leaving just the newly mated queens to go and find somewhere to hibernate.
“This is a time of year when you don’t normally encounter wasps. It is unusual,” Professor Sumner told BBC Sport.
“I believe what is probably happening is that you are using the space and it’s being heated up and that is waking up the queens prematurely before they should do.
“Or potentially it is the mild weather. We have had quite a mild spell recently and they are coming out of hibernation when they shouldn’t be.”
Prof Sumner said that wasps are important in the environment as “pest controllers, pollinators and decomposers”.
“It is absolutely great news that Ally Pally have this really healthy population of wasps because they are doing a really important service in the parks and gardens around that area.”
The best way to avoid them? Stay still, as flapping your arms can cause wasps to sting.
