The few families that rule the UK were undecided if joining EU was benefiting, mainly for them, or not. They experimented, the experimemt failed and they cancel

The few families that rule the UK were undecided if joining EU was benefiting, mainly for them, or not. They experimented, the experimemt failed and they cancel it. I believe the most important reason was that they felt subordinate to the Germans and couldn't predict this feeling beforehand.