This is my first 'summer' at this house and yesterday and today I have noticed a small group of bees around the bottom corner of my roof. I think one at a time is getting into the roof but can't be sure. I'm on my own and unable to access the loft due to mobility problems. Can anyone advise me whether or not I need to worry, and if so who I should contact. Whenever I look there seems to be no more than 4 or 5 hovering around.