Euro MPs will no longer be entitled to Westminster Parliamentary passes after a vote in the House of Commons.
The decision means BNP MEPs Nick Griffin and Andrew Brons will not get access to Commons facilities.
Commons leader Harriet Harman said the decision was made after a review of the rules relating to passes, and concern about pressure facilities.
Ms Harman says it applies to all parties - but 30 MPs signed a motion saying the BNP should be denied access.
Labour backbencher John Mann, who tabled the Early Day Motion, said: "This stops the BNP parading round here as if they're legitimate politicians."
UK MEPs have had access to the Westminster Parliament since 1989.
The motion making this change has been on the Commons order paper since October 12 - but has been repeatedly opposed but on Tuesday evening it was resolved without opposition.
The BNP have yet to respond.