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Environmental Impact

It is clear sustained action is required to address climate change and manufacturing businesses have a responsibility to mitigate their environmental impact.

Our approach

We want to support the journey to addressing climate change and we are working hard to mitigate our own impact on the environment.

G&H products help to bring environmental and social benefits in many of our markets. Our technologies support the generation of clean, renewable energy and improve energy efficiency. We provide products that are helping with the earlier diagnosis of disease thereby supporting better outcomes for patients. We are also working hard to mitigate our own impact on the environment. Our investments in solar panels and voltage optimisation systems are already lowering our greenhouse gas emissions and in the UK all of our purchased electricity now comes from clean, renewable sources. Our Executive management team have developed a plan with the objective of delivering annual reductions in the energy used by the Group and therefore its carbon equivalent emissions and are on track to achieve net zero scope 1 & 2 emissions by 2035.

During FY23 we achieved a reduction on 33.2% in our carbon intensity measure. Our programmes to transition our US sites to purchase all of their electricity needs from clean, renewable sources is accelerating building upon the achievements of our UK sites which had achieved that milestone at the end of FY2022. We have been pleased that the US market in renewable energy is starting to become more mature providing companies such as ours the opportunity to purchase energy only from renewable sources.

Our newly acquired G&H | Artemis business will transition to green electricity at the end of its current supply contract in September 2024.

During FY2023 we invested in further solar panels and batteries at our Ashford facility. A new voltage optimisation system is being installed at our Ilminster facility and this is expected to result in a reduction in electricity usage at the site by around 8%. We now have the capacity to generate around 900 kWp of electricity from solar resources.

We use the structure of ISO 50001 – energy management systems - to help us identify where the greatest reductions in energy use can be achieved. This informs our sites’ energy reduction plans, the progress of which are monitored by our Executive team and the Board. During the year our Ilminster and Torquay sites achieved full accreditation to ISO 14001 – Environmental Management and we have a plan to progressively extend those accreditations across the rest of the Group over the coming two financial years.

Risk management

We include climate and environmental risks as part of our overall risk management processes. The Group risk register is reviewed by the Audit Committee and the Board. We have identified environment, sustainability and climate change as a principal risk for the Group given the reputational risk to the Group if we fail to deliver upon our sustainability agenda as well the physical risk that climate change poses to our operations.

Environmental and Sustainability Governance

Oversight and governance of our environmental strategy and performance will be managed through our newly formed Sustainability Committee. This will be chaired by Susan Searle and includes representatives from the G&H Executive team.

Our SVP Global Quality is responsible for the coordination of our actions in the area of environmental management and chairs the Sustainability sub-committee. Responsibility for local planning and performance lies with our site managers who work with our site environmental champions to formulate and deliver projects.

External Recognition

We receive external recognition for ESG matters. We received a rating of A in MSCI’s latest ratings report.

From FY2024 we will also be working with EcoVadis and CDP on their climate change surveys.

Scope 1 & 2 Emissions

We are targeting to be net zero for scope 1 & 2 emissions by 2035. We are proud that in FY2023 we made a further significant reduction in our emissions. During FY2024 we will also be assessing which of the scope 3 emission metrics it may be practical for us to report against and what reduction targets may be possible.

In FY2023 we moved our Cleveland, Ohio facility to renewable electricity. Given the high temperature requirement for crystal growth conducted in that facility this assisted materially in the reduction of our scope 2 emissions in the year.

Each of our sites has developed a plan to reduce its electricity consumption. Progress against these plans is reviewed on a quarterly basis by the Executive team.

Set out below are a selection of actions coming from this plan:

  • LED lighting where not already installed.
  • Alternative forms of heating.
  • The introduction of heat recovery from manufacturing equipment.
  • Installing battery systems to harness excess energy generated from our Solar PV systems.
  • Upgrade to equipment with improved energy efficiency.

We also reduce our impact on the environment through our recycling programmes. At our UK sites we are now measuring our water usage and waste to landfill so that we can put in place and measure reduction plans. We plan to start measuring water usage at our US sites in FY2024. It is not currently possible to secure waste to landfill measures for our US sites as our service providers do not currently capture that data.

Energy Use and Scope 1 & 2 Emissions

The primary drivers of our scope 1 & 2 emissions reduction in the year were:

  • The transfer of our Cleveland, Ohio site to renewable, purchased electricity.
  • A reduction in energy consumption as a result of site improvement activities.
  • Further investment in solar panels.

Our emissions data is calculated centrally from data collected locally. In reporting our carbon dioxide emissions, we have followed the UK Government’s Environmental Reporting Guidelines. We have also followed the Greenhouse Gas (GHG) Reporting Protocol and the Streamlined Energy and Carbon Reporting (SECR) guidelines. 2022 Conversion factors have been used for October 2022 to May 2023 inclusively, and 2023 Conversion factors used for June 2023 to September 2023 inclusively. In the US eGrid 2019 Conversion factors have been used for October 2022 to January 2023 inclusively, and eGrid 2020 Conversion factors used for February 2023 to September 2023 inclusively.

We have selected as our primary intensity measure carbon dioxide emissions per £1m of revenue for our global scope 1 & scope 2 GHG emissions (expressed in tonnes of carbon dioxide equivalent). We are using an operational control boundary for direct GHG emissions. For scope 1 emissions we include our total owned and leased vehicles’ direct emissions impact. By far the largest element of our energy usage is our US scope 2 purchased electricity. Our reported data is collected from metered sources.

Current Reporting Year FY2023
UKRest of WorldTotal
Emissions from activities which the Group own or control including combustion of fuel and operation of facilities (scope 1)/tCO2e164275439
Emissions from electricity, heat, steam and cooling purchase for own use (scope 2)/tCO2e752,6222,697
Total gross scope 1 & scope 2 emissions/tCO2e2392,8973,136
Energy consumption used to calculate above emissions:/MWh5,78412,8818,655
Tonnes of carbon dioxide equivalent per £1 million of revenue3.833.521.1

The Group achieved a 33.2% reduction in its intensity measure of tCO2 emissions per £1m of revenue.

At the end of the financial year 69% of the Group purchased electricity came from renewable sources.


If you have any questions regarding our approach or our company's impact on the environment then please don't hesitate to contact us.