Britannia is a British icon that once bestrode our currency, the one penny piece.
What has that got to do with Europe?
The barbarians who caused such devastion to England of that time originated in Europe, namely the Romans, remember.
We, as a nation have great cause to distrust such a land mass. Over centuries that area has caused much psychological damage to the peoples of this island. Much blood and treasure has been split and lost to maurauders of all kinds. Some further afield than Europe.
Many have not heard of Casiallinus, a great British tribal leader in the Norfolk area who fought the Roman occupation before Brittania.
Beware Europeans bearing gifts, they have form in history and you trust them at your peril.
The Trojan Horse of fiscal and administrative chains being offered now will bind us forever. Beware.