The Prime Minister will not be able to move on from the Lobbying row until he answers questions over Lynton Crosby's influence on government policy, according to a public relations expert.
Kevin Craig, from Political Lobbying and Media Relations, said Lyton Crosby's involvement in government policy "looks wrong and and doesn't feel right" and called on the Prime Minister to provide answers.
More top news
Former footballer Frank Worthington has denied he is suffering from Alzheimer's - a day after his daughter said he was.
A list of results for London Mayor and the London Assembly
The Cameroonian international collapsed just seven minutes after coming onto the field, according to reports.