Back in 2005, the Belsize Park architect was given a formal reprimand after the committee concluded that she had allowed a local domestic project to run out of control because she had failed to offer written advice to either the contractor or the client.
Collins said: 'I recognise that the appellant has not fallen below the appropriate standards in the past and is to be regarded generally as a competent member of her profession.
'Things went badly wrong on the project in issue here, but it is an isolated event.'
He added: 'Nonetheless, I am not persuaded that the PCC was wrong to find serious professional incompetence to have been established.'
'There is no complaint about the sanction imposed -.[and] it follows that this appeal must be dismissed.'