Boardroom briefing: sustainability | Q2 2026

A briefing for UK-based senior leaders on the latest sustainability developments that are most likely to affect your risk profile, compliance obligations and decision making. We set out what needs UK-based board attention now, the questions to ask, and the actions you should take in the next 90 days.

This quarter in numbers

• UK government’s Seventh Carbon Budget aiming at 87% emissions reduction in the UK in the period 2038-42, reaffirming net-zero ambition (UK Government).
• Investment firms could save around £20 million a year under new proposals from UK FCA to simplify climate reporting for investment products (FCA).
• BP’s share price slashed by 9% minutes after announcing the removal of its chairman (Guardian).

This quarter at a glance

Top sustainability news stories

Sustainability developments that continue to shape the boardroom decisions:

• Climate change: record breaking temperatures recorded in May and June 2026 in the UK, causing business disruptions across sectors, especially in food and agriculture, energy, transport and infrastructure (Met Office). At the same time, the UK has finalised its Seventh Carbon Budget, setting a legally binding emissions limit of 535 mtCO₂e for 2038–2042 and aiming for an 87% reduction from 1990 levels to keep the country on track for net zero by 2050 (UK Government). Despite the recent announcement by UK government to revisit the Zero Emission Vehicle mandate (BBC), these latest developments further reinforce the urgency of having appropriate climate mitigation and adaptation measures in place and a need for practical transition pathways.
• Governance: BP PLC removed its chair over concerns on governance, oversight and conduct (BP). It highlights that greater scrutiny on how boards handle allegations, investigations and disclosures are expected by investors and stakeholders, putting chairs and directors personally accountable for maintaining good governance.

Sustainability regulation horizon scan

Regulatory developments further push for a level playing field around the world:

• Nature reporting: the International Sustainability Standards Board (ISSB) plans to include nature-related disclosures in non-mandatory guidance, rather than create a separate standard (ISSB). For UK businesses, the prominence of nature related risks are increasingly assessed by investors as part of overall business resilience assessment.
• Evolving landscape on sustainability reporting: Brazil shifted from mandatory ISSB-aligned sustainability reporting to voluntary adoption (ESG Today). Australia reset the practicality of its corporate reporting requirements for midmarket businesses, by doubling the thresholds for the last group of companies subject to mandatory sustainability reporting (Acumentis). In the UK, the Financial Conduct Authority (FCA) proposed to simplify climate reporting for investment products (FCA). The changing landscape highlights the need for a practical approach to sustainability reporting and businesses should secure commercial value informed by disclosures.
• SBTi: the Science Based Targets initiative (SBTi) has published its updated Net-Zero Standard V2.0 expecting implementation from 2027. The SBTi Corporate Net-Zero Standard V2.0 shifts the focus from target-setting to demonstrable climate action and accountability, introducing more flexible target-setting approaches while strengthening requirements for transition planning, progress tracking, and management of ongoing emissions across the value chain. (SBTi). For UK businesses working towards SBTi targets, this means climate targets are likely to face greater scrutiny on their context relevance, transparency and progress, not just ambition.
• European sustainability reporting: the European Financial Reporting Advisory Group (EFRAG) is expected to consult on updated sustainability reporting rules for non-EU groups in July 2026 (EFRAG). For UK groups with significant EU activity, this could affect whether, when and how they need to report sustainability information under EU rules.

Spotlight of the quarter

The evolving materiality landscape

This quarter we highlight the evolving materiality landscape in corporate sustainability. Materiality, traditionally the threshold at which information influences decision-making, has long underpinned financial reporting. In sustainability, it has historically been applied through an impact-focused lens, with organisations assessing their most significant effects on the environment and society. The introduction of standards by the International Sustainability Standards Board (ISSB), and their adoption in the UK through the UK Sustainability Reporting Standards (UK SRS), marks a decisive shift toward financial materiality, focusing on how sustainability-related risks and opportunities translate into financial performance. By contrast, the EU market endorsed a double materiality approach combining both impact and financial perspectives.

Different regulatory regimes now require different definitions of what ‘matters’, creating complexity for multinational organisations and increasing the risk of inconsistency, misalignment or regulatory challenge. At the same time, investor and other lender expectations are rising, with greater emphasis on accountability at both board and management levels, and clearer linkage between sustainability issues and financial performance. Boards must therefore oversee not only the outcomes of materiality assessments, but also the assumptions, methodologies, and governance behind them, particularly as assurance expectations increase.

Whilst many view materiality as mere compliance, a materiality assessment is a core business decision-making tool that can identify new risks and opportunities, inform your corporate strategy and ultimately create new business value.

Organisations should therefore ensure clarity on which materiality lens applies in each jurisdiction, and how these perspectives are reconciled at group level. For those organisations looking to lead in their sector, a double materiality approach remains best practice and most likely to identify new growth opportunities and create value.

For more information on materiality, please see this factsheet.

Questions for the board to ask this quarter

1. Which materiality lens best aligns with our strategy and reporting obligations and where might misalignment create risk?
2. Has the board sufficiently challenged your current materiality approach to ensure consistency, decision-usefulness, and traceability from data to disclosure?

One action in the next 90 days

Work out which types of materiality assessments apply to your business and assess the financial implications related to sustainability.