Background
Following a 2014 BBC Panorama exposé revealing widespread cheating at English-language test centres, the Educational Testing Service (ETS) used voice-recognition software to review recordings from its TOEIC (Test of English for International Communication) Speaking tests. ETS flagged tens of thousands of results as “invalid,” and the Home Office relied on those findings to cancel or refuse leave to remain in over 40,000 immigration cases, on the basis that applicants had used proxy test-takers. Among those affected were Mosaraf Hossain (C2), Naveed Khan (C6), and Ashiqur Rahman (C11), three claimants who later brought civil proceedings against the Home Office for damages and declaratory relief under the Data Protection Act 1998, the Data Protection Act 2018, the UK GDPR, and Article 8 ECHR.
Before reaching the High Court, each claimant had contested the Home Office’s fraud allegation in immigration appeals. Khan and Rahman secured favourable First-tier Tribunal (FTT) findings — the FTT either positively found they had not cheated or held that the Home Office had failed to prove its case — and the Home Office chose not to appeal either outcome. Hossain never obtained a merits ruling: the Home Office withdrew its appealed immigration decision on the eve of the FTT hearing. In defending the civil damages claims, the Home Office re-asserted in its Defences that each claimant had obtained their TOEIC results by fraud. The claimants applied to strike out those fraud allegations.
The strike-out applications turned on two related but distinct doctrines. For Khan and Rahman, the question was issue estoppel: given the FTT decisions in their favour, could the Home Office relitigate the fraud allegation, and if so, only by establishing a recognised exception? For Hossain, the question was abuse of process under the principle in Henderson v Henderson: could the Home Office now press a fraud allegation that it had the opportunity — but chose not — to litigate before the FTT?
The Court’s Holding
Mrs Justice Heather Williams held that the parties were agreed that, as a baseline, issue estoppel applied to prevent the Home Office from re-alleging fraud against Khan and Rahman unless it could establish a recognised exception. The Home Office advanced two exceptions. First, it argued that Upper Tribunal guidance in DK and RK (ETS: SSHD evidence: proof) [2022] UKUT 112 (IAC) and Varkey and Joseph (ETS – Hidden rooms) [2024] UKUT 142 (IAC) constituted a “change in the law” within the meaning of the narrow exception recognised in Arnold v National Westminster Bank Plc [1991] 2 AC 93. The court rejected that argument: UT guidance on the weight to be given to evidence is not a change in the substantive law of the kind required by Arnold, and relying on those UT decisions as findings of fact would also offend the rule in Hollington v Hewthorn & Co [1943] KB 587. Second, the Home Office contended that expert evidence adduced in DK and RK and Varkey constituted new evidence that could not with reasonable diligence have been obtained at the time of the FTT appeals, or alternatively that Takhar v Gracefield Developments Ltd [2019] UKSC 13 disapplied any diligence requirement where fraud is asserted. The court declined both routes: comparable expert evidence — including from Professor Sommer and Christopher Stanbury — had been available and used in earlier TOEIC proceedings decided before the FTT heard these claimants’ appeals, and Takhar arose in a materially different context (setting aside a judgment obtained by fraud) that does not transfer to the present situation. Accordingly, the fraud allegations were struck out as against Khan and Rahman.
In relation to Hossain, the court analysed the abuse of process doctrine. The Home Office contended there was no relevant prior determination and that the broader merits weighing exercise favoured allowing the fraud allegation to stand given the cogency of its evidence and the scale of the damages claim. The court considered that the FTT was the proper forum in which to litigate the fraud allegation and that the Home Office had all relevant material available at that time; its withdrawal of the immigration decision on the eve of the hearing deprived Hossain of the opportunity to obtain a positive exoneration. Allowing the Home Office to raise the fraud allegation afresh in the civil proceedings would amount to an abuse of the court’s process, and accordingly those passages were also struck out.
Key Takeaways
- Upper Tribunal guidance on how to weigh ETS/TOEIC evidence (DK and RK, Varkey) does not constitute a “change in the law” sufficient to reopen issue estoppel under the narrow Arnold exception; such guidance is evidential, not a change in legal principle.
- The “new evidence” exception to issue estoppel cannot be engaged where equivalent expert evidence was available to the party seeking to rely on it before the earlier proceedings concluded; the reasonable diligence requirement is not relaxed merely because fraud is pleaded.
- The Henderson v Henderson abuse of process doctrine can bar re-litigation of a fraud allegation in civil proceedings where the defendant agency chose to withdraw from the earlier tribunal proceedings rather than press the allegation to a determination.
- The Hollington v Hewthorn rule presents a further obstacle to a party seeking to rely on findings or conclusions in a different tribunal’s proceedings as a basis for reopening an issue estoppel.
Why It Matters
The TOEIC scandal produced one of the largest waves of mass immigration enforcement action in modern UK history, affecting over 40,000 individuals. Many of those claimants who successfully overturned their immigration decisions are now pursuing civil damages claims for data protection and human rights breaches. This judgment significantly limits the Home Office’s ability to re-run fraud allegations in those civil proceedings where it previously failed — or declined — to prove fraud before the immigration tribunal. It reinforces that issue estoppel and abuse of process apply robustly across jurisdictional boundaries within the UK court system, and that later, more favourable evidential guidance does not automatically entitle a losing party to a second bite at the merits.
More broadly, the decision is a pointed reminder to public authorities that the choice not to appeal an adverse tribunal finding — or to withdraw a decision on the eve of a hearing — carries lasting procedural consequences. Agencies cannot exhaust administrative litigation without success, then reassert the same factual allegation in downstream civil claims simply because the available evidence has since been interpreted more favourably in other proceedings.