Corporate law expert Tom Proverbs-Garbett of Pinsent Masons said that a legislative requirement "would diverge somewhat from the UK's traditional method of strengthening corporate governance through non-legislative means".
"The comments also perhaps underestimate the existing power of section 172 of the 2006 Companies Act, which already requires the directors of a company to have regard to the impact of the company's operations on the community and the environment, among other things," he said. "From 2019, there is also an obligation on large companies to report on how that factor, among others has been considered and the effect of that consideration on the company's decisions and strategies during the financial year."
"Lord Sales acknowledges this requirement, but argues more can and should be done," he said.
"The suggestion that a non-executive director (NED) could take responsibility for championing environmental matters for their company, following the approach taken to workforce engagement in the most recent iteration of the UK Corporate Governance Code, reflects the increasing visibility of environmental, social and governance (ESG) matters for both companies and their investors. The FRC's draft Stewardship Code, for example, makes explicit that signatories are expected to take into account material ESG factors, including climate change, when fulfilling their stewardship responsibilities," he said.
Lord Sales noted in his speech that, based on the current law, "there is much force in the view that directors may and, increasingly, must take into account and accord significant weight to climate change in their decision-making".
"This is not least because a failure to act sustainably is more and more likely to have adverse financial impacts on companies who are, or are perceived to be, behind the curve on environmental issues," he said.
Lord Sales said the position of company directors in regard to climate change was governed by the existing regulatory and legal disclosure regimes; their responsibility to assess the financial impact of any fines relating to polluting activities and tax incentives to encourage a shift to low carbon activity on their companies; and their "general fiduciary obligations" to shareholders.