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September 3, 2026

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National Case Law Archive

Zakrzewski v The Regional Court in Lodz, Poland [2013] UKSC 2

Reviewed by Jennifer Wiss-Carline, Solicitor

Case citations

[2013] 2 CMLR 33, [2013] 2 All ER 93, [2013] 1 WLR 324, [2013] UKSC 2, [2013] WLR(D) 18

The Supreme Court held that a European arrest warrant valid when issued does not become invalid because the particulars later become incomplete; challenges to accuracy lie only in abuse of process. Zakrzewski's aggregated Polish sentence was immaterial, though the appeal was formally dismissed after the warrant's withdrawal.

Facts

Lukasz Zakrzewski was convicted on four separate occasions in Poland between December 2003 and January 2005 of offences of dishonesty and violence (assault and robbery, and three sets of theft offences), receiving sentences of 14 months, 15 months, six months and ten months respectively. All were initially suspended but were subsequently activated by further offending or breaches of probation terms. After he absconded, the Regional Court of Lodz issued a European arrest warrant (EAW) on 24 February 2010 based on the four convictions, specifying the sentence passed on each occasion.

He was arrested in England on 28 September 2010. Because he faced further criminal charges in the United Kingdom, the extradition proceedings were adjourned. During the adjournment he applied to the District Court of Grudziadz to have the four sentences aggregated under the Polish aggregation procedure (articles 85-86 of the Penal Code and articles 569-577 of the Criminal Procedures Code). On 19 April 2011 that court imposed a cumulative sentence of 22 months, in place of the 45 months represented by the sum of the original sentences.

It was submitted for Mr Zakrzewski that the warrant no longer gave the particulars of “the sentence which has been imposed” required by section 2(6)(e) of the Extradition Act 2003, since the only relevant sentence was now the cumulative one. District Judge Rose rejected this and ordered extradition. Lloyd Jones J allowed the appeal, holding that the warrant must relate to the “current operative sentence” ([2012] 1 WLR 2248, para 26). The requesting authority appealed to the Supreme Court.

Lord Sumption noted, at the outset, that each original sentence related to conduct criminal in England, and that all the original sentences and the cumulative sentence exceeded the four-month threshold in section 65(3)(c). It was common ground that a fresh warrant giving the same particulars but specifying the cumulative sentence would be good. He observed that the argument “is therefore hardly overburdened with merit. It is about as technical as it could possibly be.”

Issues

The issues were: (1) whether an EAW which was valid when issued ceases to be a valid Part 1 warrant because the prescribed particulars (here, the sentence) subsequently become incorrect or incomplete; and (2) if not, on what juridical basis and in what circumstances an English court may inquire into the accuracy or completeness of the particulars and decline to extradite.

Arguments

For Mr Zakrzewski it was contended that the aggregation order meant the warrant no longer gave the particulars required by section 2(6)(e), so that it had become invalid, or alternatively that the court should exercise an inherent jurisdiction not to proceed because the warrant no longer gave proper, fair or accurate particulars, relying on Criminal Court at the National High Court, First Division v Murua [2010] EWHC 2609 (Admin). The requesting judicial authority resisted this, and supplied further information explaining that the composite sentence replaced the individual penalties for enforcement purposes but did not invalidate the individual sentences.

Judgment

Lord Sumption gave the sole reasoned judgment; the other four Justices agreed. He began with the structure of Part 1 of the 2003 Act and Council Framework Decision 2002/584/JHA, noting that extradition under Part 1 is by way of direct execution of the warrant, and that the procedure operates at each stage by reference to the prescribed particulars in the warrant. The court asks whether the “conduct” specified in the warrant discloses an extradition offence, and it is not permissible to conduct an independent examination of the elements of the offence under the law of the requesting state (Office of the King’s Prosecutor, Brussels v Cando Armas [2006] 2 AC 1; see also Dabas v High Court of Justice in Madrid, Spain [2007] 2 AC 31).

The scheme rests on mutual recognition and a high level of confidence between member states, as recited in the Framework Decision and reflected in Lord Phillips’s observation in Assange v Swedish Prosecution Authority (Nos 1 & 2) [2012] 2 AC 471. From this Lord Sumption derived the central proposition:

“The validity of the warrant depends on whether the prescribed particulars are to be found in it, and not on whether they are correct… Validity is not a transient state. A warrant is either valid or not. It cannot change from one to the other over time.”

He identified two safeguards where particulars are or become incorrect. The first, and main one, is mutual trust: the requesting authority may forward further information under article 15.3 (receivable under section 202 of the Act), or the executing court may request it under article 15.2; a warrant that ceases to be accurate will be withdrawn or corrected. The second is the executing court’s inherent power to prevent abuse of its process, encompassing manipulation for a collateral purpose (R (Government of the United States of America) v Bow Street Magistrates’ Court [2007] 1 WLR 1157) and cases where the prescribed particulars are wrong, referring to Lord Bingham’s remark in Caldarelli v Judge for Preliminary Investigations of the Court of Naples, Italy [2008] 1 WLR 1724.

Lord Sumption endorsed Sir Anthony May’s statement of principle in Murua, subject to four qualifications: (i) the jurisdiction is exceptional, requiring statutory particulars that are wrong or incomplete in a misleading respect; (ii) the true facts must be “clear and beyond legitimate dispute”, the jurisdiction not being a vehicle for contentious challenges to the factual basis of the alleged conduct; (iii) the error or omission must be material to the operation of the statutory scheme; and (iv) crucially, and departing from part of Sir Anthony May’s analysis, “the sole juridical basis for the inquiry into the accuracy of the particulars in the warrant is abuse of process. I do not think that it goes to the validity of the warrant”, because materiality is critical to abuse of process whereas validity admits of no materiality inquiry.

Applying this, the warrant was valid when issued and did not become invalid on the making of the aggregation order. The only possible objection was abuse of process. The further information from the Regional Court of Lodz explained that the composite sentence replaced the individual penalties for enforcement but did not invalidate them; accordingly the particulars were not wrong, merely incomplete. The omission was immaterial because even the 22-month cumulative sentence far exceeded the four-month threshold, citing Lord Hope in Pilecki v Circuit Court of Legnica, Poland [2008] 1 WLR 325, para 29. Lord Sumption noted, obiter, that the position would differ if the composite sentence fell below four months, as there would then be no extradition offence. He also rejected Lloyd Jones J’s “current operative sentence” test, observing that the sentence of the court will rarely be the current operative sentence given remission, parole and varying national procedures.

Because Mr Zakrzewski had returned voluntarily to Poland after argument and the warrant had been withdrawn, the appeal was formally dismissed under section 43(4), though the Court’s reasoning would otherwise have restored the District Judge’s order.

Implications

The decision settles that the validity of a Part 1 warrant is determined by whether it contains the prescribed particulars, not by whether those particulars are accurate, and that validity cannot be lost by subsequent events. Practitioners can no longer mount challenges to the accuracy or completeness of an EAW’s particulars as a challenge to its validity under section 2; the sole route is abuse of process, where materiality is decisive and the jurisdiction is exceptional. The threshold is demanding: the corrective facts must be clear and beyond legitimate dispute, and the court will not entertain a debatable analysis of the requesting state’s law or evidence.

The judgment also confirms that changes to a foreign sentence, such as Polish aggregation producing a reduced cumulative penalty, will not defeat extradition where the sentence still exceeds the statutory minimum. It complements Pilecki, which addressed the converse case where only the cumulative sentence was specified. Requesting authorities are expected to correct or withdraw warrants that have become inaccurate, and further information under article 15 remains the primary corrective mechanism.

The decision matters to requesting judicial authorities, extradition practitioners and defendants: it narrows technical challenges based on post-issue developments, while preserving a residual abuse of process safeguard where an error or omission genuinely affects the extradition decision. Its limits are apparent: the Court expressly left open the different position where a composite sentence falls below the four-month threshold, and it was not concerned with prosecutorial manipulation cases. The formal dismissal on account of the warrant’s withdrawal means the reasoning, though authoritative, did not alter the practical outcome for Mr Zakrzewski.

Verdict: The Supreme Court (Lord Sumption, with whom Lord Neuberger, Lord Kerr, Lord Clarke and Lord Wilson agreed) held that the High Court had been wrong to allow Mr Zakrzewski’s appeal against the extradition order: the warrant remained valid and its incompleteness was immaterial, so in the ordinary course the appeal would have been allowed and District Judge Rose’s extradition order restored. However, because Mr Zakrzewski had voluntarily returned to Poland after the hearing and the warrant had been withdrawn by the issuing court, the appeal was formally dismissed pursuant to section 43(4) of the Extradition Act 2003.

Source: Zakrzewski v The Regional Court in Lodz, Poland [2013] UKSC 2

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To cite this resource, please use the following reference:

National Case Law Archive, 'Zakrzewski v The Regional Court in Lodz, Poland [2013] UKSC 2' (LawCases.net, September 2026) <https://www.lawcases.net/cases/zakrzewski-v-the-regional-court-in-lodz-poland-2013-uksc-2/> accessed 4 September 2026