From the M4
Exit at junction 12 and follow the A4 towards Newbury.
After approx. 5 miles take the A340 towards Aldermaston.
Follow signs for Basingstoke through Aldermaston.
After passing the AWE on your left you will reach a roundabout.
Take the 4th exit into Calleva Park

From the M3
Exit at junction 6 and on the Basingstoke ring road follow signs for the A340 towards Aldermaston.
Stay on this road for approx. 8 miles.
Travel through Tadley on the A340 towards Reading.
After passing the AWE on your right, you will reach a roundabout.
Take the 3rd exit into Calleva Park.