Law firm

A&O Shearman

A&O Shearman is named as solicitors in at least 431 UK judgments from 2003 to 2026, most often in commercial disputes and intellectual property.

431
judgments
79
in the last five years
17
in the Supreme Court or Privy Council
90
in the Court of Appeal

Practice areas

  • Commercial disputes148
  • Intellectual property64
  • Cross-border disputes56
  • Insolvency and restructuring50
  • Company and partnership46
  • Public and administrative law42
  • Arbitration38
  • Banking and finance31

Courts

  • Supreme Court14
  • Privy Council3
  • Court of Appeal (Civil Division)90
  • High Court322
  • Employment Appeal Tribunal2

Counsel most often instructed

  • David Allison20
  • Richard Handyside18
  • Ryan Perkins13
  • Robin Dicker11
  • Rupert Allen11
  • Adam Al-Attar9
  • Adrian Beltrami9
  • Andrew Waugh8

Judgments by year

  • 20269
  • 202520
  • 202416
  • 202317
  • 202217
  • 202120
  • 202035
  • 201928
  • 201831
  • 201715
  • 201624
  • 201524
  • 201421
  • 201321
  • 201213
  • 201120
  • 201020
  • 200919
  • 200822
  • 200712

Cases later courts cite most

Cases A&O Shearman acted in that later judgments cite most often.

Date Case Cited by
2 Dec 2015
[2015] UKSC 72 · Supreme Court
A fact-specific term may be implied into a contract only where it is necessary for business efficacy or so obvious that it goes without saying. The proposed…
326
27 Mar 2019
[2019] UKSC 15 · Supreme Court
Obviousness under section 3 of the Patents Act 1977 requires a fact-specific assessment of all relevant circumstances. Uninventive work which the skilled…
79
12 Jun 2013
[2013] UKSC 35 · Supreme Court
An arbitration agreement contains both a positive promise to arbitrate and a fundamental negative promise not to pursue covered claims elsewhere. The negative…
69
15 Jan 2021
[2021] UKSC 1 · Supreme Court
Business interruption cover must be construed objectively and as a coherent whole. A radius-limited disease clause covers cases of disease occurring within the…
63
13 Jul 2009
[2009] EWCA Civ 725 · Court of Appeal (Civil Division)
A non-exclusive jurisdiction clause ordinarily accepts the possibility of parallel proceedings. Its effect depends on its wording. Foreign proceedings are not…
57
9 Oct 2020
[2020] UKSC 38 · Supreme Court
Under English common-law conflict rules, the law governing an arbitration agreement is the law chosen by the parties or, absent choice, the law with which the…
44
31 Jul 2019
[2019] EWCA Civ 1361 · Court of Appeal (Civil Division)
A written contract may be rectified for common mistake where it fails to record the parties’ actual common intention at execution. Where there is no prior…
42
31 Mar 2011
[2011] EWCA Civ 353 · Court of Appeal (Civil Division)
A court cannot rewrite an agreed contractual formula merely because later events expose an unprovided commercial consequence. Corrective construction under…
38
18 Jul 2011
[2011] EWCA Civ 826 · Court of Appeal (Civil Division)
The court is the final decision-maker on whether an expert has contractual jurisdiction, even where the expert determination clause purports to make the…
36
14 Apr 2021
[2021] EWCA Civ 501 · Court of Appeal (Civil Division)
Under section 32 of the Limitation Act 1980, reasonable diligence is assessed objectively by reference to the actual claimant and its circumstances at the…
33

Recent cases

Date Case Cited by
2 Oct 2026
[2026] EWCA Civ 1224 · Court of Appeal (Civil Division)
Whether a foreign judgment precludes re-litigation by issue estoppel is governed by the lex fori. It concerns the receiving court’s treatment of an earlier…
8 Sep 2026
[2026] EWHC 2321 (Comm) · High Court: Commercial Court
In a secured-lending contract requiring a professional valuation by an appointed valuer, a report is not invalid merely because the work is imperfect, the…
13 Aug 2026
[2026] EWHC 2165 (Ch) · High Court: Chancery Division
An online marketplace operator is not liable for copyright infringement merely because users upload and view protected material. Under the Copyright, Designs…
12 Aug 2026
[2026] UKSC 30 · Supreme Court
Under regulation 5(2)(a) of the Part-Time Workers (Prevention of Less Favourable Treatment) Regulations 2000, part-time status need not be the sole cause of…
1
30 Jul 2026
[2026] EWHC 1991 (Ch) · High Court: Chancery Division
An obligation in a payment-services contract requiring a customer to maintain a reserve is a continuing primary obligation, not an accrued right, unless the…
18 Jun 2026
[2026] EWHC 1477 (Ch) · High Court: Chancery Division
Where a party asserts that regulatory or legal obligations prevent payment after contractual rights have been determined, the court should not exclude that…
17 Apr 2026
[2026] EWCA Civ 468 · Court of Appeal (Civil Division)
Where related agreements contain competing arbitration and jurisdiction clauses, the court should adopt a broad, purposive and commercially minded…
25 Mar 2026
[2026] EWHC 734 (Ch) · High Court: Chancery Division
A bankruptcy court may look behind a judgment debt where there is a coherent allegation that the judgment was obtained by fraud. Permission to appeal should…
15 Jan 2026
[2026] EWHC 64 (Admin) · High Court: Administrative Court
The Payment Systems Regulator may use a general direction under Financial Services (Banking Reform) Act 2013, section 54, to impose price caps on interchange…
4 Dec 2025
[2025] EWHC 3181 (Pat) · High Court: Patents Court
A patent claim is not insufficient merely because its boundaries present practical puzzles. A purposive construction may accommodate reasonable approximations…
1
3 Dec 2025
[2025] EWHC 3154 (Comm) · High Court: Commercial Court
Summary judgment is appropriate where the defendant has no realistic prospect of defending the relevant issue and no compelling reason for trial. A defendant…
25 Nov 2025
[2025] EWHC 3111 (Comm) · High Court: Commercial Court
An anti-suit injunction will be granted to restrain foreign proceedings only where the contractual or non-contractual basis for relief is established and the…
1

Earlier names

These figures include judgments naming firms that have since merged into, or been renamed as, A&O Shearman: Allen & Overy LLP, Shearman & Sterling LLP, Allen Overy Shearman Sterling LLP.

Based on judgments published by The National Archives (Find Case Law) in which A&O Shearman is named as solicitors, counted under the firm's current name. The figures are minimums: not every judgment names the solicitors, and a judgment is counted only when we are confident who acted. The selection of cases listed here is limited, and does not include family, criminal or anonymised cases. Firm details include data from the Solicitors Regulation Authority. zoomLaw is independent and not connected with A&O Shearman. Something wrong or missing? Tell us. All law firms.