You are kidding, right?

This pattern was obviously created by an intelligent being. It is quite a
sophisticated and very carefully constructed design. No tornado created
this.

You have two options:

1. The intelligent life is human, probably living in Wiltshire, and did it
for a bit of fun.

2. The intelligent life is extra-terrestrial aliens, which visited Wiltshire
and made patterns on the ground for reasons unknown.

You can choose which to believe, but personally when I see some crops have
been bent over my first thought is not that an alien spaceship must be
involved.