We've just driven down to Dorset and trusted Waze directing us to the m4 to then go m25, m3 - absolute nightmare, best part of 2 hours to get to the m25 (at which point we were further from our destination than home) and a crazy route through back streets of Chelsea. I think my instinctive route of south circular to clapham then a3, m25, m3 would have been much quicker. This was lunchtime on a Friday.