  Prime Minister Tony Blair told voters not to back the BNP during a visit to the northern city of Leeds, describing the party as extreme ... ugly ... and divisive.  We do not need that type of politics in this country, he said.  The BNP is less of a force in British politics than its far right equivalents in continental Europe. It has no members of the country's parliament but its numbers of seats on local councils, currently at 14, is growing   Either this visit was not during this election campain or Tony Blair has had his head up his arse for the last 2 local elections.