Driving out of Blackpool today past the tower and sticking to the 30mph speed limit, my satnav went crackers warning of speed cameras. The speed limit dropped to 20 mph so I slowed down until the 30mph popped up again. Then the alarm went off again only this time like a phone! Fast rings. The cameras are on both sides of the road so there's no escape. Dirty sly tactics every alternating lamp post! Beware if you're going to Blackpool!!