It is understood that Adebayor was at Wembley on Thursday to admit a charge of improper conduct to a Football Association regulatory commission hearing.
Ferguson is already facing the possibility of a fine or touchline ban after he admitted a Football Association charge of improper conduct for questioning the fitness of referee Alan Wiley.
But John Ormerod, Andersen's UK managing partner, told the UK Press Association that there was nothing improper about those early links, and that subsequent work won by the company from the Labour Government had been secured fairly.