British Business Bank survey: Small Business Transition to Net Zero
Smaller Businesses Are Central to the UK’s Net Zero Transition
A research report from the British Business Bank highlights a critical but often overlooked reality in the UK’s path to net zero: smaller businesses will play a decisive role in whether national climate targets are achieved. Drawing on extensive UK-wide survey data and emissions analysis, the report provides one of the most detailed assessments to date of how SMEs are responding to the net zero challenge — where progress is being made, where barriers remain, and what support is needed to accelerate action.
While individual SMEs may have relatively modest carbon footprints, collectively they account for an estimated 43–53% of UK business greenhouse gas emissions — roughly equivalent to the emissions generated by larger businesses combined. This means that achieving the UK’s legally binding 2050 net zero target will depend not only on large corporations and heavy industry, but also on the actions of millions of smaller firms across every region and sector of the economy.
The research reveals that most smaller businesses have already begun their transition journey, but the majority remain at an early stage. Although awareness of net zero and climate impacts is growing, only a small proportion of SMEs have yet implemented comprehensive decarbonisation strategies. Many firms are taking practical first steps — such as improving energy efficiency, reducing waste, introducing digital meetings, or switching to renewable energy suppliers — but more complex and transformative actions remain limited.
Importantly, the report uncovers a highly diverse SME landscape. Some businesses are proactive and ambitious in reducing emissions, while others remain constrained by cost, feasibility, lack of information, or uncertainty over where to start. The findings suggest that a one-size-fits-all approach will not be enough. Instead, targeted support, accessible finance, clearer regulation, and practical guidance will all be essential to unlocking wider SME participation in the transition to net zero.
The research also highlights growing demand for green finance. More than one in ten smaller businesses have already accessed external finance to support net zero-related activity, while many more indicate they are prepared to invest over the coming years if the right products, incentives, and support mechanisms are available.
Key Findings from the Research
Smaller businesses account for approximately half of UK business greenhouse gas emissions, underlining their critical role in delivering national climate targets.
Over three quarters of SMEs remain in the early stages of their net zero transition journey, with only a small minority having implemented advanced decarbonisation strategies.
Awareness of net zero is increasing, but around half of SMEs still do not yet prioritise emissions reduction within their core business strategy.
Most businesses have taken at least one practical action to reduce emissions, with the most common measures focused on waste reduction, energy efficiency, and digital working practices.
Capability-building activities remain limited, with very few SMEs formally measuring their carbon footprint or setting emissions reduction targets.
Cost remains the single biggest barrier to action, particularly upfront investment requirements, alongside operational feasibility and limited control over premises or supply chains.
SMEs identify better access to information, grants, finance, clearer standards, and supportive policy frameworks as the most important enablers of faster progress toward net zero.
The report provides a valuable evidence base for policymakers, investors, financial institutions, and business support organisations seeking to accelerate the UK’s transition to a low-carbon economy. More importantly, it demonstrates that the transition to net zero is not solely a challenge for large corporates — it is a transformation that will depend on the ambition, capability, and resilience of the UK’s smaller businesses.