SASB Code GRI Code Description Response, link or additional information Organisational Profile 102-1 Name of the organisation Severn Trent Group Plc 102-2 Activities, brands, products and services About Us, Our Businesses 102-3 Location of headquarters Severn Trent Centre, 2 St John’s Street,Coventry, CV1 2LZ 102-4 Location of operations About Us, Our Businesses 102-5 Ownership and legal form Refer to “Directors Report – Substantial Shareholdings” section of the 2021 ARA, page 156 102-6 Markets served Refer to the “Business Model” section of the 2021 ARA, pages 6 to 7 and the “Making a difference together” section of the 2021 SR IF-WU-000.A IF-WU-000.C IF-WU-000.D IF-WU-000.E 102-7 Scale of the organisation Refer to sections “Making a Difference Together” (inside cover), “Key Performance Indicators” pages 18 to 19, and “Business Services Performance Review” page 30 of the 2021 ARA Additionally: IF-WU-000.C Total water delivered to: (1) Total billed measured residential = 181948.85 thousand m3 (2) & (3) Total billed measured business = 101553.95 thousand m3 Distribution input = 722886.15 thousand m3 IF-WU-000.D Average volume of wastewater treated per day, by (1) Sewage treatment works = 3118155.81 m3/d 102-8 Information on employees and other workers Total of full time and part time female employees: 2029 Total of full time and part time male employees: 5058 Total of temp (indirect female): 132 Total of temp (indirect male): 211 Total of full time permanent and full time indirect female: 1708 Total of full time permanent and full time indirect male: 5162 Total of part time permanent and part time indirect female: 453 Total of part time permanent and part time indirect male: 107 All data expressed as headcount 102-9 Supply chain Refer to the ‘Working with our suppliers’ section of the 2021 SR Introduction This GRI Index provides more detail to internal and external stakeholders on Severn Trent PLC sustainability-related policies, programmes and performance. This index highlights the disclosures from our 2021 Annual Report and Accounts (‘ARA’) and Sustainability Report (‘SR’) that are in line with the Global Reporting Initiative (‘GRI’) Standards. During the preparation of the Sustainability Report, we took into account the GRI’s Reporting Principles of stakeholder inclusiveness, sustainability context, materiality and completeness. Unless stated otherwise, the period covered is the fiscal year 1 April 2020 to 31 March 2021. Unless stated otherwise, the information in this report refers to Severn Trent Water, which makes up 98% of our total customer base. This GRI Index, alongside our Sustainability Report, serves as our 2021 Communication on Progress (‘COP’) to the United Nations Global Compact (‘UNGC’). SASB/GRI content index