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.

IIM leading provider consultants 2021
We are pleased to share the interim service provider consultants as voted for by the interim management community in the IIM interim management survey.
The leading consultants are:
IIM provider consultant of the year 2021
Laurence Frantzis – NSCG Interim Partners
IIM provider consultant of the year 2021 (runners up)
Toni Hall – Penna [2nd place]
Anthony Lewis – Tile Hill [3rd place]
Leading provider consultants 2021
Denise Raw – NSCG Interim Partners
Gavin Wingfield – NSCG Interim Partners
Claire Lauder – Boyden
Alison Rotundo – Eton Bridge Partners
Ross Dawson – Eton Bridge Partners
Ben Cowan – Eton Bridge Partners
Natalie Allen – Practicus
Jason Rommer – Wilton & Bain
Andrew Vaux – Practicus
Jamie Butel – Xylem Resourcing
Dean Corbett – Investigo
Dominic Mellet – Finatal