I theorize that why most crop circles are in England is that the UK is really for the New World Order; also these prime number crop circles must be some sort of cryptic form of communication with Reptilians on the moon. Much of David Ickes work describes the reptilians having close ties with the blood lines of the British Royal Empire. The queen herself may have up to .333 reptilian DNA.

As I see it, technology is a form of control and the UK is really into this Orwellian Society business. Since technology can be compromised especially with communications within electronics by hackers. I believe the UK has resorted to encrypting their messages in crop circles with prime numbers. Along with the encryption the symbols, music notes, flowers, planetary orbits, and various other images must be implied to have meaning the prime number.

The other theory:
Or these crop circles could be made by the reptilians spaceships by hovering over a field in a cloaked fashion and then use a microwave burst to produce the prime crop circles. Then the British Royal Crown and heads of state which are part of the reptilian blood line take this information and decrypt it on the other end with their key.