The M40 connects London and Birmingham. It is my favourite motorway out of London. The lanes are wide and generally uncrowded. The traffic tends to flow well and the drivers’ lane discipline is generally good on this stretch of motorway There are frequent service stations, some even with KFC! You are treated to some lovely views of the rolling Oxfordshire countryside on your journey The main pain is to be felt at either end of the motorway when you frequently hit traffic at the M25 and M42.