Stuart Kluz-Burton v Regional Court in Warsaw

In extradition proceedings under the Extradition Act 2003, systemic or generalised deficiencies in the requesting state’s judiciary satisfy only the first stage of the inquiry into judicial independence and fair-trial risk. The court must then make a specific, fact-sensitive assessment of the individual case, including whether public statements or other circumstances create a real risk that the relevant judge or proceedings will be influenced. Actual interference need not be proved. A high-profile prosecution, election timing, rapid procedural steps and political comment do not, without more, show that a warrant was issued by a non-independent judicial authority or that extradition would expose the requested person to a flagrant denial of a fair trial. Political advantage derived from a prosecution likewise does not establish abuse of process without evidence that the statutory scheme or judicial process was improperly subverted.

Mr Stuart Kluz-Burton appealed against District Judge Leake’s order for his extradition to Poland. He argued that the arrest warrant was not issued by a judicial authority, that extradition would breach article 6 of the Convention, and that the proceedings were an abuse of process.

The district judge accepted that systemic deficiencies existed in the Polish judiciary but found no sufficient case-specific risk. He held that the issuing judge was a judicial authority, that extradition would not create a real risk of a flagrant denial of a fair trial, and that the proceedings were not abusive. The appeal concerned whether those conclusions should be disturbed, including in light of fresh evidence.

The appeal was dismissed. The court held that District Judge Leake applied the correct legal tests and was entitled to reach his conclusions.

1. Judicial authority. Under Part 1 of the Extradition Act 2003, the issuing body must be independent and impartial and must not be exposed to a risk of executive influence. Functional independence is required, although institutional independence is not necessarily essential. The respondent bore the criminal standard burden on this issue. The two-step approach in L and P [2021] 2 CMLR 24 applied. Systemic deficiencies were established at the first stage, but the potential for executive disciplinary power over judges did not itself establish that the particular issuing judge lacked independence.
2. The judge had considered the evidence cumulatively. The restrictions on access to the file were not shown to bear on the issuing judge’s independence. The speed of the process and the Sunday timing of the warrant were explained by the appellant’s location abroad, the perceived flight risk, the high profile of the allegations, the availability of a duty judge and the statutory time limits. The political statements were directed to the investigation, prosecution and public debate, not to the court. They contained no threat or pressure capable of showing that the judge was liable to be influenced. Judge Lubowski’s appointment before the constitutional reforms and his earlier decision did not provide a contrary basis. The warrant was therefore validly issued by a judicial authority.
3. Article 6. Under section 21A(4)(a) of the Extradition Act 2003, discharge was required only if there were substantial grounds for believing that extradition created a real risk of a flagrant denial of a fair trial. The systemic deficiencies accepted at stage one did not establish that individualised risk. The change of government, absence of evidence of current political influence, evidence concerning the prosecutor, and the possibility of a neo-NCJ judge did not make a difference. Extradition was compatible with article 6.
4. Abuse of process. The statutory extradition scheme is abused only where proceedings are invoked or used for an improper or collateral purpose so as to undermine its integrity. Political actors’ attempt to derive advantage from the allegations was insufficient without evidence that the prosecution was improperly instigated or pursued, or that the judicial process had been subverted.

• High Court (Administrative Court): The appeal against the extradition order was dismissed: [2026] EWHC 1804 (Admin) .
• Westminster Magistrates’ Court, District Judge Leake: On 27 February 2025, the judge ordered extradition to Poland, holding that the warrant was issued by a judicial authority, that article 6 did not bar extradition, and that there was no abuse of process.