Tony Mann, a project manager at nearby John Lewis, who also happens to be a trained bee keeper, dashed over to the shop to help lead efforts to smoke the European honeybee colony out.
Tony Mann said: "We have either had a virgin Queen or an old Queen, she has left the nest and she has brought the warm and settled on the shop front. We are going to smoke them into a box and encourage them to stay there and we will remove them later today.
"They will go to whoever wants a hive. We need bees in London as much as we need them on the countryside. Bees are a keystone species. These are European honeybees."
More top news
Senior Labour candidate and London Mayor contender David Lammy has admitted to ITV News that a post election deal with the SNP is possible
With the deadline for voting approaching at midnight tonight, here is how to make sure you don't miss out.
A woman has been given a prison sentence for stealing money from coworkers to fund her lavish wedding and buy bikinis for her honeymoon.