Yes, part of Blair's attack on judicial fairness, along with double jeopardy. (Tin hat on)The FFP rule about co-operation is so widely drafted that anything could be defined as 'non-cooperation'. And it's 99.9% certain tht we ould have taken legal advice at the time on that. If you were hauled in for questioning by the police on a serious criminal matter you would be legally entitled to refuse to co-operate with them. You have the right to remain silent so as not to incriminate yourself, and a lawyer would tell you that and support your right to do so.
I remember the outcry when the government brought in a measure to make your silence in an investigation something that could potentially be used to count against you in court.
I believe Uefa's rule on cooperation is unique among sporting bodies.