"if you look carefully at the results for the 1966 General Election results in Smethwick (scroll down), you'll see in the third position a party with an eerily familiar name, click on the link.
Smethwick (UK Parliament constituency)
It wasn't all hearts and flowers."

A little bit of history. The (former) British National Party was one of an assortment of right wing ragamuffin organisations from which the National Front was formed.