Sheppard Robson - which was unveiled as the architect of the second phase of the scheme on Friday - insisted that the first it had heard of the appointment was only a week ago.
That would mean that the office was brought in just four days after the news was released that MJP had been dumped and would not be over-seeing the largest phase of its competition-winning designs.
It has also become clear that Sheppard Robson will be novated to the contractor Bovis Lend Lease, a role that had caused so much trouble for MJP.
But a spokeswoman for the practice insisted that they were delighted by the appointment. 'We are pretty pleased given the high-profile nature of the project.
'By the time that we became involved, MJP were already off the scheme and so we were not too worried about it,' she added.