What are the rules on buses entering or leaving Greater London as part of their route? Do commercial operators need permission from TfL to enter and stop at locations within Greater London? Are TfL routes leaving Greater London to places like Watford and Dartford and Slough run under the deregulated legislation once outside Greater London? I note that TfL bus stops make it as far west as Slough (although not right into the centre) but don't reach Watford.
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