The European Convention on Human Rights, as incorporated into UK domestic law by the Human Rights Act 1998, guarantees fundamental rights that apply directly to the CAA's airspace infringement process. These are not aspirational principles — they are binding legal obligations on the CAA as a public authority.
Article 6(1) of the European Convention on Human Rights states:
"In the determination of his civil rights and obligations or of any criminal charge against him, everyone is entitled to a fair and public hearing within a reasonable time by an independent and impartial tribunal established by law."
Article 6(1), European Convention on Human Rights — incorporated by the Human Rights Act 1998, Section 6Airspace infringement proceedings are often characterised as "administrative" rather than criminal. The CAA may present its process as an informal regulatory matter. However, Article 6(1) ECHR applies not only to criminal charges but also to the determination of civil rights and obligations. The CAA's infringement proceedings engage Article 6 because they are:
The scope of Article 6 in administrative proceedings has been extensively considered by the UK courts:
Article 6 is not a single right but a bundle of interconnected protections. Each of the following is directly relevant to the CAA's infringement process — and each is arguably violated by the systematic practices documented in the whistleblowing disclosure.
The overarching requirement is fairness. A hearing is not fair if the decision-maker has access to material evidence that the accused has not seen, if the accused cannot meaningfully challenge the evidence relied upon, or if the process is structured to secure a particular outcome. The CAA's practice of refusing to disclose the make, model, and error specifications of the radar used — while simultaneously asserting the radar's accuracy — fails this test.
Each party must have a reasonable opportunity to present their case under conditions that do not place them at a substantial disadvantage vis-à-vis the other party. (Dombo Beheer BV v Netherlands (1993) 18 EHRR 213)
When the CAA has the radar specifications, knows the error margins, and withholds this information from the pilot, there is no equality of arms. The pilot is expected to respond to an allegation without access to the very data needed to assess whether the evidence supports it. The CAA's information advantage is not incidental — it is systematic and deliberate.
Both parties must have the opportunity to have knowledge of, and comment on, all evidence adduced or observations filed. (Ruiz-Mateos v Spain (1993) 16 EHRR 505)
The ICG sits in private. The pilot is not represented and may not see the full evidence before a decision is made. The pilot's submissions may or may not be considered; there is no mechanism to verify that they are. This is not an adversarial procedure — it is an inquisitorial process in which the accused is excluded from the room.
A person subject to proceedings must be able to challenge the reliability and accuracy of the evidence relied upon against them. This includes the right to know the methodology by which the evidence was obtained and to test its accuracy.
When the CAA refuses to identify the radar, refuses to provide its specifications, refuses to disclose its error margins, and dismisses the pilot's own more-accurate GPS evidence without reasoned explanation, the right to examine and challenge evidence is rendered meaningless.
The decision-maker must give reasons that demonstrate the evidence has been properly considered and that the decision is based on reliable material. (H v Belgium (1987) 10 EHRR 339)
A decision that an infringement occurred, based on radar data whose error margin is 20 times larger than the alleged infringement, without any statistical analysis of measurement uncertainty, is not a reasoned decision based on reliable evidence. It is an assertion unsupported by the data.
"It is unlawful for a public authority to act in a way which is incompatible with a Convention right."
Human Rights Act 1998, Section 6(1)The CAA is a public authority within the meaning of section 6. It is therefore unlawful for the CAA to conduct infringement proceedings in a manner that violates Article 6 rights. This is not a matter of policy preference or best practice — it is a statutory obligation.
Section 7(1) of the Human Rights Act provides that a person who claims that a public authority has acted unlawfully under section 6 may bring proceedings against the authority in the appropriate court or tribunal, or rely on the Convention right in any legal proceedings. A pilot who has been subjected to an unfair infringement process has standing to challenge the decision on human rights grounds.
Section 8 empowers courts to grant such relief or remedy, or make such order, as it considers just and appropriate in relation to any act of a public authority which is found to be unlawful. This may include quashing the decision, ordering reconsideration, or awarding damages where appropriate.
Independently of the Human Rights Act, English common law imposes its own requirements of procedural fairness on administrative decision-makers. These principles are long-established and may in some respects go further than Article 6.
Administrative law imposes a duty on decision-makers to give adequate reasons for their decisions, particularly where those decisions affect individual rights. In R v Secretary of State for the Home Department, ex parte Doody [1994] 1 AC 531, the House of Lords confirmed that fairness generally requires that a person affected by a decision be told the reasons for it, so that they may determine whether the decision is susceptible to challenge.
A decision letter that simply states an infringement occurred, without addressing the pilot's technical submissions on radar accuracy, does not discharge the duty to give reasons.
Where a public authority publishes a procedure and commits to following it, individuals are entitled to expect that it will be followed. The CAA publishes CAP 1404 and commits to Just Culture principles. It commits to disclosing the evidence, accepting submissions, and giving reasoned decisions. These published commitments create a legitimate expectation that they will be honoured. Departure from them without good reason is reviewable. (R v North and East Devon Health Authority, ex parte Coughlan [2001] QB 213)
The CAA must establish that an infringement occurred. The pilot does not have to prove that it didn't. This is a fundamental principle that the CAA's process appears to reverse in practice.
For administrative proceedings, the applicable standard of proof is the balance of probabilities — i.e., "more likely than not." But this standard still requires the decision-maker to weigh the evidence properly.
If the radar's error margin at the relevant range is 573 m, and the alleged infringement is 29 m, the radar data is equally consistent with the aircraft being inside or outside the boundary — indeed, it is consistent with the aircraft being anywhere within a 573 m radius. On the balance of probabilities, the evidence does not establish that the aircraft was more likely inside than outside. The radar data is simply incapable of answering the question.
To convict a pilot of an infringement on this evidence is comparable to claiming that because a coin landed, it must have landed heads — without looking at it. The evidence does not exclude the possibility of infringement, but it equally does not establish it. When the evidence is neutral, the burden of proof means the allegation fails.
The whistleblowing disclosure draws explicit parallels between the CAA's treatment of radar evidence and the Post Office's treatment of the Horizon computer system. In both cases:
The Post Office scandal resulted in one of the largest miscarriages of justice in British legal history. Parliament enacted the Post Office (Horizon System) Offences Act 2024 to quash the wrongful convictions. The parallels with the CAA's conduct are, as the disclosure notes, "striking and deeply concerning."
The whistleblowing disclosure raises the possibility that the conduct described may constitute criminal offences under English law.
The elements of the offence, as established in R v Dytham [1979] QB 722 and Attorney General's Reference (No 3 of 2003) [2004] EWCA Crim 868, are:
The knowing misrepresentation of radar accuracy — claiming "a few centimetres" when the specifications show hundreds of metres — coupled with the systematic failure to disclose material evidence to accused pilots, may satisfy these elements where decision-makers were aware or ought to have been aware of the radar limitations.
Additionally, if the CAA has knowingly relied upon evidence known to be unreliable or insufficient to support findings of infringement, this may constitute attempting to pervert the course of justice or a related offence.
The Data Protection Act 2018 and UK GDPR provide additional rights relevant to infringement proceedings:
The CAA is a public authority bound by the Human Rights Act 1998 to act compatibly with Convention rights. Article 6 ECHR requires a fair hearing, equality of arms, the right to challenge evidence, and reasoned decisions based on reliable evidence. Common law procedural fairness requires the same. The burden of proof is on the CAA, not the pilot.
When the CAA withholds radar specifications, dismisses more-accurate GPS evidence, claims radar accuracy orders of magnitude beyond its actual capability, and imposes penalties based on evidence that falls well within the radar's own error margin, it acts unlawfully. Pilots subjected to this process are entitled to challenge it — both through the CAP 1404 review process and, if necessary, through judicial review.