The Commons Speaker was asked by a Staffordshire MP yesterday to clarify the dress code for MPs wearing armbands in support of an antipoverty campaign.
Tory Michael Fabricant (Lichfield) asked during a point of order about the dress code for the Commons.
He said he backed the " important" Make Poverty History campaign - where supporters wear a white band around their arm or wrist - as did many other MPs.
Speaker Michael Martin said members often wore badges supporting various organisations and there was no breach of the rules.
However, he added: "Some members approached me beforehand about the wearing of armbands and it's my preference that they shouldn't wear armbands but that's up to the individual Members of Parliament."