Peter Weinzierl v Government of the United States of America & Anor

In an extradition appeal, the High Court must decide whether the lower decision was wrong in the statutory sense, rather than conduct a general rehearing. An abuse-of-process challenge requires a materially wrong or misleading extradition request, with the true position clear and beyond dispute. The court must focus on the essence of the alleged conduct when applying the dual-criminality test. A conspiracy charge fails that test where it may be proved solely by future conduct which would not constitute an English money-laundering offence, but substantive charges may succeed where they necessarily involve dealing with criminal property. Assurances concerning detention conditions may not resolve a real risk arising from inadequate cell space. Treaty provisions must be interpreted in context and in light of their object and purpose.

The United States sought the appellant’s extradition for conspiracy and substantive money-laundering offences arising from alleged tax fraud, bribery and transfers through United States financial institutions. A judge sent the case to the Secretary of State under the Extradition Act 2003. The Secretary of State ordered extradition.

The appellant appealed against both decisions and applied to adduce fresh evidence concerning Brazilian tax proceedings and United States detention conditions. The principal issues were abuse of process, particulars, dual criminality, passage of time, Articles 3 and 8 of the ECHR, physical and mental condition, and specialty protection.

1. Appellate approach. The statutory appeals were not general rehearings. However, because the judge’s decision appeared not to engage with the appellant’s arguments, the court assessed grounds 2–8 for itself. The renewed judicial-review application was refused.
2. Fresh evidence. The Brazilian report was not capable of affecting the outcome because it challenged the underlying prosecution case, which was irrelevant to extradition. The further evidence of Maureen Baird concerning detention conditions was admitted because it related to matters unavailable at the hearing and was potentially decisive.
3. Abuse of process. The request did not materially misstate the evidence. “Sham transaction” described transactions entered into for a different, unlawful purpose, not transactions which never occurred. Alleged defects concerning guarantee terminology and the appellant’s role were not material to the statutory scheme. Alleged inducement to enter the United Kingdom, even if established, was not sufficiently egregious. Limitation issues were disputed and equivocal, and there was no evidence of bad faith.
4. Particulars and dual criminality. The indictment and supporting affidavit provided sufficient particulars. The conduct test requires attention to the essence of the alleged criminality, ignoring adventitious circumstances: Norris v Government of the United States of America [2008] UKHL 16. Count 1 could be proved through future-looking United States money laundering conduct which did not necessarily involve existing criminal property. It therefore did not disclose an extradition offence. Counts 2–4 necessarily involved dealing with criminal property and could be transposed into offences under section 327 of the Proceeds of Crime Act 2002.
5. Passage of time, Articles 3 and 8, and condition. The passage of time did not make extradition unjust or oppressive. The appellant’s mental-health evidence did not establish the high threshold required under section 91. Article 8 did not outweigh the strong public interest in extradition. However, the evidence concerning cell space, measured under a different United States standard and potentially below 3 square metres per inmate, established substantial grounds for believing that detention might breach Article 3. The respondent was given an opportunity to provide a specific assurance on cell space.
6. Specialty. Article 18 of the extradition treaty, interpreted under the Vienna Convention principles and in context, permits prosecution for a lesser included offence only if it is itself extraditable. Specialty arrangements therefore existed.
7. Outcome. The section 108 appeal against the Secretary of State’s order was dismissed. No final order was made on the section 103 appeal pending further information. If the respondent could establish Article 3-compliant detention, the appeal would be allowed only in relation to count 1.

• High Court (Administrative Court): the judge sent the case to the Secretary of State on 5 June 2023 under section 87(3) of the Extradition Act 2003.
• Secretary of State: extradition ordered on 28 July 2023 under section 93(4).
• High Court (Administrative Court): section 108 appeal dismissed; section 103 appeal left without final order pending supplementary information concerning Article 3 detention conditions.