The Sunday Times reports she went for the job at Tech City in 2012, weeks after Mr Johnson started bidding for City Hall to take control of the same quango.

The allegations adds to mounting questions Mr Johnson faces over his links with the businesswoman - due to appear on Good Morning Britain tomorrow.

He has already been accused of granting public funding to Ms Arcuri, whose flat he's said to have visited "several times".

She reportedly received £10,000 in business cash from an organisation Mr Johnson was responsible for as London Mayor in 2013.

And Ms Arcuri, who was in her 20s at the time, was also allegedly given special treatment to attend jet-set trade missions led by the future PM, according to a Sunday Times investigation.

Mr Johnson has now been referred to the Independent Office for Police Conduct (IOPC), and must provide details of their relationship by Tuesday to a summons from the London Assembly.

If he fails to do so he could face a penalty.