From Gatwick and Heathrow Airports: The easiest way to get to Oxford from these airports is to use "The Airline" coach service. The most convenient stop in Oxford is Gloucester Green, the terminus of the service. You pay the driver in cash when you board or buy on-line using your credit card. They accept U.S. dollars as well as British pounds sterling and euros. Check costs and timetables by having a look at the Oxford Bus Company website: http://www.oxfordbus.co.uk/main.php?page_id=23
From London: It is easy to get to Oxford by either train (Paddington Station) or coach (outside Victoria Station or from Victoria Coach Station).
From the Oxford bus station: The main bus station in Oxford is located at Gloucester Green, which is in the middle of town. The easiest way to get to the UGA at Oxford Center from the bus station is by taxi. After getting off the coach, walk to the taxi stand across Gloucester Green square. The taxis line up at the other end of Gloucester Green (near the Odeon Movie Theatre). Give the taxi driver the address (104 Banbury Road). It should cost in the neighborhood of £10 (including tip).
From the Oxford train station: Again, the easiest way to get to the facility on Banbury Road is via taxi. The taxis should be lined up outside the rail station (see above).