Baroness Michelle Mone has insisted ministers knew about her involvement with a PPE firm "from the very beginning", as she faced calls to step back permanently from the House of Lords.The peer dug in to the row by hitting out at Rishi Sunak after he said he was taking the issue "incredibly seriously".Sir Keir Starmer said she should be expelled from the Lords as he urged the Government to "come clean" about the scandal he described as a "shocking disgrace".The Labour leader piled pressure on ministers to answer "serious questions" about what they knew, including who started the conversations with Lady Mone in the first place.A Government minister said on Monday that she should not return to the Lords after admitting lying over a PPE contract. Energy minister Lord Callanan told Sky News he could not comment on the details of the case given the ongoing criminal and legal actions about it.