The reliable service offered by Oxford Cars is there to take the strain so that you can relax and slip into the correct mood for your impending holiday or business trip.
Yes, there are other ways to get to and from an airport but they all come with a number of potentially disastrous drawbacks including (but not limited to!); poor reliability and/or timekeeping, along with unnecessary stress at the beginning your holiday or a visitor's arrival, whether on holiday or a business trip.
The reverse is true with respect to Meet and Greet arrangements. A booking with an Oxford Cars driver in Arrivals with the passenger's name or company name; whichever you stipulate. A comforting thought, both for the first time visitor in a foreign country, and for those wishing to ensure the safety of that visitor.