The Covid inquiry has rejected a last-minute bid that would have allowed Baroness Michelle Mone and her husband Doug Barrowman to access documents and other evidence about PPE deals during the pandemic.
Last week both individuals asked to become "core participants" in the inquiry - a legal status which also gives the right to make statements and apply to ask questions of witnesses.
PPE Medpro, led by Mr Barrowman, was awarded government contracts worth more than £200m during Covid after Baroness Mone recommended the firm to ministers.
The inquiry has already ruled that evidence about the company will be heard in private later this month to avoid prejudicing an ongoing National Crime Agency (NCA) investigation. Baroness Mone, 52, and Mr Barrowman, 59, have denied wrongdoing.