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Sector rankings

Most Sustainable Consulting / Professional Services Companies 2026

16 Consulting / Professional Services companies ranked 0–100 on real environmental impact using SINK's open formula.

16
Companies ranked
50
Sector average
62
Sector best (Freshfields)
Full ranking
1
FreshfieldsLeading practice
62
2
AccentureMaking progress
59
3
Slaughter and MayMaking progress
59
4
Ernst & Young Global Limited (EY)Making progress
58
5
ExperianMaking progress
58
6
International Business Machines CorporationMaking progress
56
7
Bioregional DevelopmentMaking progress
56
8
PricewaterhouseCoopersMaking progress
53
9
DXC Technology CompanyMaking progress
53
10
Protect Our WintersMaking progress
52
11
McKinsey & CompanyMaking progress
52
12
DeloitteBelow expectations
45
13
IntertekBelow expectations
41
14
Bird & BirdBelow expectations
41
15
The Linux FoundationSignificant gaps
27
16
CompTIA (Computing Technology Industry Association)Significant gaps
22
Frequently asked

Consulting / Professional Services sustainability, answered.

Which Consulting / Professional Services company is the most sustainable?

Freshfields is the highest-scoring Consulting / Professional Services company on SINK with a score of 62/100 (Leading practice).

What is the average sustainability score for Consulting / Professional Services companies?

The average SINK score across 16 Consulting / Professional Services companies is 50/100. The average across all 847 scored companies is 38/100.

How does SINK rate Consulting / Professional Services companies?

SINK scores Consulting / Professional Services companies on 10 questions using public data: Scope 1/2/3 carbon footprint, energy source, nature and biodiversity, resource use, water impact, emissions trajectory, science-based targets, transparency, and major controversies. The formula adjusts for the industry's inherent environmental footprint and company scale.

Which Consulting / Professional Services company has the worst sustainability score?

CompTIA (Computing Technology Industry Association) has the lowest SINK score among Consulting / Professional Services companies at 22/100 (Significant gaps).

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