Direct answer & research summary
Osborne Clarke is a global-footprint law firm mapped by Sartori & Partners across 26 offices in 12 countries, headcount band 1,000–1,500 attorneys, Sartori Firm Index 48.7, last verified 22 Jul 2026. Sartori & Partners has completed 400+ placements since 2017 (230+ in-house), including 52 general counsel and chief legal officer searches, with a median of 11 weeks from brief to accepted offer. A NASDAQ-listed medtech in Boston accepted its successor general counsel in week 11, from a shortlist of four at day 24.
01 — Public record
Facts on file
Compiled from public sources. Figures are shown as bands where exact counts are not published; nothing here is provided by the firm.
Website
Largest mapped office
London, GB
Professionals
1,000–1,500 attorneys banded
Countries covered
12 via 26 offices
Office footprint — mapped metros
26 offices · 12 countriesPrincipal practices
Bold chips mark the firm’s deepest mapped practices (major or strong).
Seniority mix — banded, fee earners
≈275 partners · 125 counsel · 600+ associates
Mapped from public bios and firm pages; exact counts are not published, so figures are shown as approximate bands.
Sartori Firm Index — footprint (a different lens from the Atlas tiers)
Global · coverage 3 of 348.7
Composite SFI
SFI sub-index · banded
75.1
Scale
SFI sub-index · banded
37.9
Reach
SFI sub-index · banded
5
Hiring
SFI sub-index · banded
The Sartori Firm Index measures footprint and momentum (scale · reach · hiring), not practice quality. It never assigns an Atlas tier, and the Atlas never reuses this number — the two lenses are deliberately separate.
02 — Where this firm is ranked
Ranking Atlas & Firm Index
No composite firm score is published. Atlas tiers are assigned per market or practice from public footprint and evidence; the Firm Index leaderboards are a separate footprint lens.
2 listings · Atlas tiers apply only within their own market or practice
| Listing | Type | Tier | |
|---|---|---|---|
| Best law firms in London | Atlas ranking | Highly active | → |
| Sartori Firm Index — United Kingdom | SFI leaderboard | — | → |
03 — Sources & verification Last verified 22 Jul 2026 · next review by 22 Aug 2026 · change log
Public sources
- 1 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 2 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 3 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 4 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 5 Milan - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 6 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 7 Cologne - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 8 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 9 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 10 Berlin - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 11 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 12 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 13 The Netherlands - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 14 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 15 Belgium - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 16 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 17 Our Locations - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 18 Hamburg - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 19 Italy - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 20 Cologne - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 21 Barcelona - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 22 Berlin - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 23 Madrid - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 24 Belgium - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 25 Hamburg - Osborne Clarke - International Law Firmfirm_website · 2026-07-21
- 26 Osborne Clarke advises redalpine on Germany's largest seed funding round to date of USD 55 million of robotics start-up MicroAGI | Osborne Clarkefirm_website · 2026-07-21
- 27 Osborne Clarke advises QuantumDiamonds on EUR 91 million Series A financing round for quantum-based chip inspection | Osborne Clarkefirm_website · 2026-07-21
- 28 Osborne Clarke advises redalpine on Germany's largest seed funding round to date of USD 55 million of robotics start-up MicroAGI | Osborne Clarkefirm_website · 2026-07-21
- 29 Osborne Clarke advises Grifols, S.A. on the refinancing of its capital structure | Osborne Clarkefirm_website · 2026-07-21
- 30 Osborne Clarke advises Stenon on EUR 18 million Series B financing round for real-time soil analyses | Osborne Clarkefirm_website · 2026-07-21
- 31 Osborne Clarke advises redalpine on Germany's largest seed funding round to date of USD 55 million of robotics start-up MicroAGI | Osborne Clarkefirm_website · 2026-07-21
- 32 Osborne Clarke advises Stenon on EUR 18 million Series B financing round for real-time soil analyses | Osborne Clarkefirm_website · 2026-07-21
- 33 Osborne Clarke advises QuantumDiamonds on EUR 91 million Series A financing round for quantum-based chip inspection | Osborne Clarkefirm_website · 2026-07-21
Know the limits of this data
- —Figures are bands, not audited counts; public sources lag reality by weeks or months.
- —Atlas tiers are Sartori’s independent editorial opinion — not the firm’s claim, and not a client-satisfaction measure.
- —No firm-level numeric score exists; Atlas tiers apply only within their own market or practice.
- —No third-party legal-directory band is used as an input.
Corrections from the firm or its representatives are reviewed within five working days.
Change log
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Discuss a mandate →Osborne Clarke is profiled here independently by Sartori. This page is not affiliated with, endorsed by, or produced in cooperation with the firm; firm names are used for identification only and no logo or brand assets are reproduced. Rankings reflect Sartori’s editorial methodology and public mapping — they are not legal advice, nor a recommendation to instruct counsel.