The Labour party employed a convicted sex offender to assist their candidates in the 2005 General Election. But that's ok, because they said this in a statement:

"If we had known of this conviction then the offer of his help would have been
refused"

Thanks for clarifying; it makes all the difference if we know that the Labour Party didn't intentionally employ a sex offender.

There'll be some who might expect the ruling party of this country to check the backgrounds of those they employ, even if they are only employed on a voluntary basis. To them I say "get real." Why would a government so committed to checking up on its citizens bother to check up on the people it employs? Head in the sand is the way they operate. Head in the sand.