STOP WORK IMMEDIATELY
All bats and the places they live are protected by law. To minimise the risk of committing an offence you must stop work and seek advice. Call the National Bat Helpline on 0845 1300 228. They will either be able to give you advice over the phone or arrange for a local volunteer to visit the site to assess the situation.
WHAT HAPPENS NEXT?
This depends very much on what work you are doing, the time of year, how many bats there are and what they are using the building for.