Are there aphids on the chosen laurel?
Bug lover, that's me. Leave them alone and they'll leave you alone .
They won't be around much longer and may not choose that shrub next year. I had that with a pollarded willow last year around late siummer but that was covered with aphids and sticky stuff. They're not on it this year.
Maybe there was a nest under the bushes. We had one last year but they weren't there this year.l