United Kingdom Prime Minister Boris Johnson could have his honorary fellowship awarded by the country’s leading architecture body revoked, a UK architecture journal has reported.

The Architects’ Journal (AJ) has reported that a letter will be presented to the Royal Institute of British Architects (RIBA) next week which will urge the RIBA to take back an honorary fellow awarded to Johnson after the Supreme Court ruled that his decision to suspend Parliament for five weeks in the run-up to the UK’s scheduled departure from the European Union was unlawful.

That verdict followed another days earlier in which the Scottish Court of Session also found Johnson’s advice to the queen to prorogue Parliament was unlawful.

The letter alleges that Johnson failed the ‘fit and proper person’ test under which the RIBA says it will consider recommending revocation of an honorary fellowship if its recipient fails to act with honesty, integrity and legality.

The campaign to revoke Johnson’s fellowship is being led by Walter Mendteth, founder of London practice Walter Mendteth Architects.

Several prominent architects have signed the letter, including former RIBA president Angela Brady who gave Johnson the award when she was at the helm.

Johnson was made an honorary fellow whilst he was Mayor of London in 2011 on the basis of an ‘enormous contribution’ to architecture.