A review published today says London City Hall's code of conduct must be bolstered following a probe into Boris Johnson's links with an American businesswoman while mayor.
Jennifer Arcuri's links with Mr Johnson came under scrutiny over allegations she received favourable treatment for her business ventures during his eight-year stint leading the capital.
The former London Mayor avoided a criminal investigation after the Independent Office for Police Conduct found no evidence he influenced the payment of thousands of pounds of public money to Ms Arcuri, or secured her participation on foreign trade trips that he led.
