The British Plant Fair is easily accesable by road, rail and air:
Stoneleigh Park is located just 2 miles from the A46 between Coventry and Warwick. The A46 can be joined from J21 of the M1 via the M69 or from J15 of the M40. Once once on the A46 follow the signs for Stoneleigh Park or the National Agriculture Centre.
Both Coventry and Warwick Parkway stations are within 5 miles of the showground and there are taxi ranks at both stations.
Birmingham International Airport is the closest to the showground at just a 30 minute drive away. alternatively you can catch the train from the airport to Coventry station just a 5 mile taxi ride away.