The RIBA has placed itself firmly behind the growing chorus of people warning the ARB about its demand for Part 3 qualification.
The institute's investigation into the board's powers - which, published this week, has become known as the Highton Report, after its author - warns that it is inevitable that the ARB will face legal action over this requirement.
Concern has been growing that, because the EU's Architecture Directive dictates that foreign-trained architects should not be required to take Part 3 to register with the ARB, there is no reason why British architects should face these demands either.
'In our view it is only a matter of time before a UK student? successfully challenges such a decision on the basis that it is irrational to require a UK-based student to possess a higher level of qualification and experience than is required of a non-UK based student, ' the Highton Report says.
The report also questions the future of the ARB's involvement with professional practice, architectural education and professional indemnity insurance, leading some to question the future of protection of title.