This is a close as I could get the the Greenwich Meridian on the road through Iford. At least accpording to GPS, which is what I, and you, will be using. My OS map puts the meridian 0.001 degrees into the Western hemisphere, and that's where it was marked in 1984, a little further along the road round the corner past the church. See if you can find that. Back to the cache, watch out for tractors, and then enjoy jumping backwards and forwards between the hemispheres.