[pagan queen]

You can phone the council and they will remove them but if they are inside your wall they will have to take the wall apart to do it, and they are probably not near the hole, more likely to be near the roof. You will probably have to wait until they are all gone not sure how long that will be, they could stay for some time, they hibernate in the winter and just carry on the next season.

Are you sure they are honey bees? How many have you seen? If it's just one bee at a time it may be a masonry bee, they are solitary so wouldn't be a problem.