Leading interim service providers
These are the IIM’s “Leading Interim Service Providers” listed in four tiers from Platinum, through Gold, Silver and Bronze (16 Providers in each).
Based on over 40,000 individual votes, we offer this ranking as a credible list of excellence in interim service provision and commend it to professional interim managers and executives to use.
- The provider title links and logo boxes go to the Providers’ websites.
- Read the IIM’s: Interim Management Survey 2021
- Read more about how the survey is conducted.

1. Eton Bridge Partners – (Previously: 2/1/2/4)
Sectors: Blend of Interim Management and Executive Search solutions within Board, Finance, Business Transformation & Technology and Human Resources.
2. Practicus – (Previously: 1/2/3/5)
Banking & Financial Services, Central Govt, Construction, Engineering, Health, Insurance, Local Govt., Pharma, Prog./Project Mgt. HR, Finance, IT, Operations & Business Analysis.
3. Interim Partners at NSCG – (Previously: 3/3/1/1)
Global provider of interim management solutions across the public and private sector. All sectors, all disciplines.
4. Wilton & Bain – (Previously: 4/4/6/6)
People, organisation and change, market entry, new product/ service launch, programme delivery and turnaround, big data, customer experience and brand and business development.
5. Holdsway – (Previously: 9/16/17/34)
Holdsway offers a comprehensive and fully benchmarked networked of interim executives to help companies accelerate change, growth and leadership transition. We cover all main industry sectors across the UK and Europe.
6. Melber Flinn – (Previously: 5/15/31/51)
Specialist interim healthcare recruitment business which also covers all other disciplines
7. Tile Hill – (Previously: 14/30/47/67)
Specialising in Public & Not-for-Profit interim appointments nationwide.
8. Penna – (Previously: 11/7/4/2)
All sectors & functions; Media, IT/ Telecoms, Utilities / Energy, Prof. Services, Financial Services, Transportation, Engineering, Construction, Retail, FMCG, Health, All Govt.; UK/Int.
9. Solace In Business – (Previously: 6/6/7/12)
Executive level interim management in Local Government, private sector service providers and the wider public sector
10. B2E Consulting – (Previously: 10/8/17/23)
Across all sectors and functions, and at all levels from Business Analyst to Programme Director.
11. Odgers Interim – (Previously: 8/5/5/3)
Senior level Interim Managers, nationwide, within the Commercial, Public & Not for Profit sectors.
12. Ameo – (Previously: 7/9/15/35)
Specialising in business change management and transformation programmes.
13. Boyden – (Previously: 13/12/11/8)
Financial Services, Retail, Commerce, Industry, TMT, Health, Life Sciences, Energy/Utilities, Transport, Central & Local Govt. General Mgt, HR, Project Mgt, Finance, IT, Procurement.
14. Osprey Clarke (Previously: 18/18/19/36)
Providing leaders in change and transformation. Functional specialists across a broad range of sectors and industries.
15. Kingsley Search & Interim – (Previously: 17/17/18/19)
Senior level interim assignments exclusively within the fields of HR and Finance and work via referral and recommendation across a wide range of business sectors, predominantly in London and the South East.
16. Anderson Quigley – (Previously: 30/45/63-new)
A specialist executive search, interim management and advisory consultancy, supporting organisations that focus on society and social development. We support people and organisations to build better leaders for a better society.