There is a roundabout in Burnley, at the derby inn/gannow lane area, you come up fro Gannow lane and if you want to go straight on you have to take the right lane because the planners have in their wisdom, marked the left lane as a left filter only lane
As for the Eastgate roundabout, as long as your not cutting up someone else, forcing them to slow down etc then it wont really matter. There are greater things in life to worry about.