Steventon
Abingdon
Oxford
OX13 6AF
Timings are in UK (London)
The nearest airport is London Heathrow, and you would then take a train to Didcot Parkway, and a taxi from there to the venue.
Alternatively, you could book a transfer which start from £120 each way - here are a few contact numbers for you & you can click the name to access their website:
Royal Cars: +44 1235 555 111
Rowstock Airport Transfer Taxis: +44 1235 428 504