We are playing at Abingdon Prep School.
The official postcode is OX13 6QL although in google maps that takes you to the field over the road. You go on the A338 and the entrance is 200 metres south of the traffic lights. There are double white gates and they open on to the car park. Then drive right up to the pitch which is on the far side of all the pitches beyond the hedge. The cars can park by the upper pavilion nearer the pitch. You will see football pitches marked out for this term, so do NOT park on them.
https://maps.app.goo.gl/cxfL5FxdbTn8jJpW7?g_st=ic
