Plot hole: In the swimming pool scene, we see the female lifeguard swapping places with the male lifeguard on a raised seat by the pool. However, shortly afterwards, he tells everyone to leave the pool and is not on the platform. (Why would he go up to the platform in the first place if everyone was getting out shortly anyway?)
Visible crew/equipment: Before the church scene, Mr. Bean drives into the car-park and knocks the blue car off the road. Look at the car closest to the camera, as Mr. Bean reverses, you can see a person and a crane above him reflected in the window. Also, in the blue car's window closest to the camera, you can see dolly tracks.
Visible crew/equipment: When Mr Bean parks his car outside the examination hall, as he reverses into his spot, you can see a group of plain-clothed crew members pushing the camera reflected in the car nearest to the camera. More noticeable as the camera is actually moving.