Thought leadership
Driving private investment in nature markets: Call for Evidence outcome and new BSI Nature Investment Standards published
1 April 2026
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The Corporate Finance Faculty of the ICAEW recently published a best practice guideline (authored by Deloitte): ESG in Deals and Investment. This report contains practical guidance on how to incorporate ESG into the strategy and process of corporate deals.
The report distinguishes between "ESG motivated" and "ESG conscious" transactions.
ESG Motivated Transactions
This is where a business is using corporate transactions "as a catalyst to advance their ESG priorities and rapidly respond to transitioning markets." The report sets out a strategy framework for these transactions which is based on two deal archetypes: defensive and offensive.
A defensive strategy is about building the resilience of a business which is relatively constrained, perhaps because of balance sheet weakness and/or poor liquidity. In an ESG context this might involve:
An offensive strategy may be adopted by businesses which are less constrained and free to make transformational changes in order to capitalise on ESG opportunities:
ESG Conscious Transactions
In contrast to ESG motivated transactions, ESG conscious transactions might not have overt ESG-based objectives, but ESG risks could nevertheless still have a material impact in terms of future enterprise value.
Such transactions will require a degree of ESG due diligence, but the target's ESG performance may not be reflected in its valuation.
The report notes a growing recognition among dealmakers of the importance of ESG risks for corporate transactions in general and cites evidence that a significant proportion (60%) have actually walked away from deals where there was a negative ESG assessment of the target business.
ESG Due Diligence
Given the wide-ranging scope of ESG, undertaking due diligence on the ESG risks of a target business first requires a materiality assessment of relevant sectors and geographies in order to narrow down the number of risk categories that will actually affect enterprise value. The report explains that there are various frameworks available for these purposes, notably the SASB Materiality Map (which the International Sustainability Standards Board is looking to incorporate into its new global disclosure standards).
Furthermore, material ESG risks can arise throughout the value chain, so it is necessary to diligence not only the direct operations of the target but also its upstream and downstream activities.
Some examples of such ESG risks might include:
Due Diligence Challenges
The report notes that there are a number of challenges in determining the impact of ESG factors on a target business:
How can we help?
At Burges Salmon, our lawyers combine a deep understanding of compliance and disclosure obligations under UK law with expertise in ESG risk factors to deliver bespoke advice to clients undertaking complex corporate transactions.
"ESG and responsible investment considerations are profoundly reshaping business models. In the coming years, as stakeholder focus on ESG increases they will become even more intrinsically embedded across M&A. Such change is set to unlock competitiveness, profitability, and attraction of capital. But it is also essential to the trustworthiness of businesses, as customers, investors, employees, societies, and governments all expect companies to contribute towards resolving social challenges while also minimising their environmental impact." ESG in Deals and Investment, Best Practice Guideline 69.
https://www.icaew.com/technical/corporate-finance/corporate-finance-faculty/esg-in-corporate-finance
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