Spirax : Statement here.

Group Sustainability: Methodology Statement

Version: V2

Date of issue: March 2026

‌Table of Contents

Table of Contents 1

Introduction 2

1. Scope 2

2. Basis of reporting 2

3. Reporting Period Covered 3

4. Data Coverage 3

5. Key Sustainability Targets (against a 2019 baseline) 4

   Energy: Purchased and Used Electricity Reporting 4

   Energy: Stationary Combustion Reporting 4

   Energy: Mobile Combustion Reporting 4

   Water Use 4

   Waste 4

   Biodiversity 4

6. Greenhouse Gas Reporting & Emission Factor Sources 5

   1. Scopes 1 & 2 5

   2. Scope 3 6

7. Energy 8
8. Biodiversity 8
9. Water 9
10. Waste 10
11. Customer environmental saving metrics 10

    1. Steam Thermal Solutions 11

    2. Watson-Marlow 11

    3. Electric Thermal Solutions 11

12. Restatements 12
13. Acquisitions, mergers and disposals 12

‌Introduction

Spirax Group is a multi-national thermal energy management and niche pumping specialist. Our Core Purpose is to create sustainable value for all our stakeholders as we engineer a more efficient, safer and sustainable world.

This statement outlines the processes, assumptions and estimations used when calculating our non-financial data, as included in our 2025 Annual Report and Accounts.

1. ‌Scope

   Spirax Group employs an 'operational control' definition to outline our Company

   boundary.

   Included within that boundary are all manufacturing facilities, administrative offices and sales offices where we have authority to implement our operating policies (i.e. owned and leased assets).

   Excluded are activities relating to remote employees working from home or in co-working spaces as we have no authority to implement our operating policies in these locations.

2. ‌Basis of reporting

   Spirax Group report against the following metrics for all sites included in our 'operational control' definition. In 2025 we have reported the metrics shown in the table below for all entities:

   Metric	Reporting Unit	Calculation Methodology described in
   Scope 1 GHG emissions	tCO₂e	Section 6.1
   Scope 2 GHG emissions - Market Based	tCO₂e	Section 6.1
   Scope 2 GHG emissions - Location Based	tCO₂e	Section 6.1
   GHG Emissions Intensity (Scope 1 & 2) - Market Based	tCO2e per £m reported revenue	Section 6.1
   GHG emissions Scope 3*	tCO₂e	Section 6.2
   Energy Consumption	MWh	Section 7
   Electricity from renewable sources	%	Section 7
   Biodiversity net gain	%	Section 8
   Water Use	m³	Section 9
   Waste Generation	t	Section 10
   Waste To Landfill	%	Section 10

   *Note: Scope 3 Category 3 is within the scope of limited assurance by Deloitte for Financial Year 2025. Other Scope 3 Categories are excluded from that limited assurance. Please see the Scope 3 section below for details of the Scope 3 calculation method.

3. ‌Reporting Period Covered

   Energy, emissions (Scope 1, 2 and Scope 3 Category 3) and water are collected and reported in line with the financial reporting period - the year to 31 December 2025 (i.e. the numbers included in the annual report are for the same 12-month period as the financial statements).

   For Scope 3 (all other categories) data is reported on a one-year lag (so for year to 31 December 2024 in the 2025 report).

   Where invoiced actual data is not collected in time for year-end, sites are required to provide an estimate based on manual meter readings or activity data from previous year same month. GHG-related activity data is tracked regularly and reported internally on a quarterly basis; this data informs the formulation of follow-up actions.

4. ‌Data Coverage

   Spirax Group has adopted a targeted approach to de-scoping certain operating companies from the requirement to report actual measured non-financial data. Specifically, sites deemed immaterial due to being in the bottom 10% of each reported metric, based on the 2024 data set, were excluded from the obligation to provide actual measured data.

   For these de-scoped sites, as well as for immaterial activities at some other locations (e.g. all activities other than mobile combustion at smaller Sales offices), estimates were generated using activity data from previous year same month. This estimation method ensures continued inclusion of all activities from sites within Spirax Group's sustainability reporting boundary, while reducing the overall administrative burden for smaller operating companies and focusing data collection efforts on material operations.

   The approach aligns with Spirax Group's commitment to transparency and accuracy,

   while maintaining efficiency in sustainability data management.

   Data is reported in the sustainability reporting system and can be entered at any time by operating companies. The consolidated data is reviewed on a quarterly basis by the data team and the sustainability management team.

5. ‌Key Sustainability Targets (against a 2019 baseline) ‌Energy: Purchased and Used Electricity Reporting

   • 20% reduction of energy use from plant equipment and building assets by end 2025, compared to a 2019 baseline.

   • 80% of electricity sourced or generated from renewable sources by end 2025 (100% by 2030).

   • Achieve Net Zero GHG emissions from our operations by end 2030 (Scopes 1 & 2).

     ‌Energy: Stationary Combustion Reporting

   • 50% reduction in Scope 1 and Scope 2 (Market Based) GHG emissions by end 2025, compared to a 2019 baseline.

   • Achieve Net Zero GHG emissions from our operations by end 2030 (Scopes 1 & 2).

     ‌Energy: Mobile Combustion Reporting

   • 60% of vehicle fleet to be electric by end 2025

   • 15% reduction in travel by end of 2025 (Scope 1).

   • 100% of vehicle fleet to be electric by end 2030

     ‌Water Use

   • Reduce water consumption by 15% by end 2025.

     ‌Waste

   • Reduce total waste generated by 10% by end of 2025.

   • Achieve zero waste to landfill by end of 2025.

     ‌Biodiversity

   • Deliver biodiversity net gain of +10% for all new manufacturing sites and facilities.