the M4, A4 and M25 are at their busiest on weekday mornings and early evenings around Heathrow to Nottingham, as commuter traffic overlaps with airport and local trips. Early or late weekday journeys benefit from extra time in the schedule; quieter periods fall on evenings, weekends and school holidays. Whatever the traffic, your driver plans the route in advance and the fare does not change.
On the day, your driver confirms the pickup point in advance so there is no last-minute searching, and for airport legs the flight is tracked so the car is ready whether you land early or late. Allow the usual airport routine either side of the drive itself: security and check-in on the way out, and passport control or baggage reclaim on the way in, both of which our free waiting allowance already covers.
It helps to flag your group size and luggage when you book rather than on the day — a saloon comfortably takes four passengers and two large cases, and an estate, MPV or 8-seater covers anything bigger, from extra suitcases to pushchairs. Demand for this kind of trip tends to rise in school holidays and over summer, so an earlier booking makes it easier to lock in the vehicle you need.