Stansted sits in north-west Essex, a little under forty road miles from Mayfair, and nearly everything that lands there is short-haul. Ryanair keeps its largest base at the airport, and the day follows the airline's rhythm: aircraft go out in a wave early in the morning and come back through the afternoon and evening, and the arrivals hall fills and empties in pulses.
It is a single terminal, which simplifies the meeting and complicates the timing. Many aircraft park at the satellite buildings rather than beside the terminal itself, and passengers ride the track transit shuttle to the main building before they queue for passport control and wait for bags. The airport has begun replacing that shuttle with covered walkways as the first stage of a terminal extension, so over the next few years the route from aircraft to arrivals will change more than once. The upshot is that the walk from stand to barrier takes longer here than the size of the place suggests, and it varies from flight to flight.
That is why the pickup time you book matters more than the landing time. Give us the flight number and the time you want the chauffeur at the barrier. The flight is tracked from take-off, and if it runs a quarter of an hour or more either side of the timetable the controller moves the pickup by the same amount, so the margin you chose for the border and the carousel is kept rather than eaten. Sixty minutes of complimentary waiting sit on top of that, for the evening when three flights reach the border at once.
The road is the M11 almost the whole way. It runs south from the airport to the North Circular, and on that stretch the journey is predictable at most hours. What happens after the motorway ends depends on where you are going. The City and Canary Wharf are the easy ends of London from Stansted, reached without crossing the centre; the West End means working across town from the east, and on a weekday evening those last few miles can take as long as the motorway did.
The Stansted Express to Liverpool Street is quick and frequent, and for one person with a small bag bound for the City it is a reasonable choice. The car earns its place when there are several of you, when the luggage is real, when the destination is nowhere near Liverpool Street, or when you would rather the next hour were spent on a call than on a platform.