Business Plan 2025–30
This is our largest and most ambitious plan yet, double the size of our current delivery plan at £7.8 billion.
Our revised Business Plan 2025-30
We have shared a revised Business Plan for 2025-30 with the water industry regulator Ofwat, following its feedback on our original plan.
This plan proposes investment of £9.xx billion. It’s ambitious and shows how we will improve the health and wellbeing of our communities, protect and improve the environment and help sustain the local economy.
We will tackle the challenges of water scarcity, water quality, pollutions and flooding, deliver a step change in our environmental performance, build new works and secure supplies for the future.
Our focus remains on what customers have told us is most important.
This is a significant priority. We face severe shortages over the short and long term and must act now to continue securing good quality, reliable water supplies.
Our key investment plans are to:
• invest £3.4 billion in our water services, 90% more than in 2020-25
• reduce the amount of water we take from the environment by 10% (compared with 2022) to support nature and wildlife
• spend £320 million modernising five large water supply works, which supply 62% of our customers
• invest £517 million to reduce leaks, including replacing water mains and installing smart meters. Our long-term target is to reduce leakage by 53% by 2050. This will also reduce interruptions to water supplies.
• deliver more than 189 million litres per day of ‘new’ water by 2035 through water recycling plants and new pipelines to transfer water from other areas
• design and plan the longer-term infrastructure we need including a new reservoir, water recycling plants and more transfers from other regions.
Our key investment plans are to:
• invest £4.1 billion in our wastewater services, an increase of 29% from 2020–25
• invest £682 million to reduce our use of storm overflows at 179 priority sites by 40% compared with 2020, including those close to shellfish and bathing waters
• reduce overall pollution incidents by 50% and end serious pollution incidents
by installing new mains and increasing the resilience of power supplies to our pumping stations, as well as continuing to install monitors across our network
• invest £600 million to upgrade 38 wastewater treatment sites to improve the water we recycle back to the environment and improve 1,000km of rivers. This will also support 60,000 new homes being built and includes a new treatment works at Whitfield near Dover
• invest in nature-based solutions first when we can, such as reed beds, wetlands and sustainable drainage systems.
We want to support our customers with easy service and clear, honest communications. This means spending time with our customers to understand their needs and tailoring our services where we can.
Our key investment plans are to:
• invest £348 million to provide trusted and easy-to-use customer services. We’ll invest in a new customer and billing system – making our services more responsive, particularly when things go wrong
• provide useful information from smart meters to support water-efficient choices
• play a bigger role in communities by increasing our outreach and education programmes, supporting more charities and providing more community spaces
• work closely with developers and our non-household retailers to improve their services, making it easier for them to connect to our networks
• improve the services our customers receive in their homes.
New investment
Our plan for 2025 to 2030 is our biggest ever investment programme and at £9 billion is greater than the original plan we submitted to Ofwat in October 2023. It is more than twice the size of the programme we are currently delivering for 2020-25.
We stretched ourselves to reduce the cost of our revised plan, following initial guidance from Ofwat. However, other feedback and further investigations since last year mean we have also needed to include new investment which has increased the total.
The new investment is to deliver:
• more environmental improvements in a shorter timescale, such as tackling storm overflows. We had requested extra time to introduce nature-based options first and give them time to deliver, rather than building storage and concrete options. However we have now shortened the programme to meet Environment Agency deadlines.
• the new water resources we need to keep taps flowing, increase our resilience to drought and protect our sensitive environments, following an update to our long-term draft Water Resources Management Plan. This now includes the £xx m upgrade of another water treatment works, bringing the total to five.
• £100 million investment in cyber security to meet NCSC guidelines.
Some improvements will be gradual. We will achieve them by improving how we work every day – finding and fixing more leaks, maintaining and upgrading our equipment, further improving the reliability of our assets, and investing in our people and their skills.
Others require a step-change in our capabilities and capacity. This includes new ways of working, innovative technology, redesigning sewer networks, building new wastewater treatment works, creating new water supplies and upgrading our five largest water supply works.
Increase in bills
Our plan will deliver significant, lasting improvements to our performance and environment. It does mean bills will need to rise – on average by xxx by xxxx.
To make sure everyone can afford to pay their bills, we’ll increase the support we offer customers in vulnerable circumstances and make our support easier to access.
Documents submitted to our regulator
PR24 Business Plan Data Tables March 24 Update
SRN39 Addendum wastewater treatment
SRN40 Addendum storm overflows
Business Plan Commentary 1
Business Plan Commentary 5
Business Plan Commentary 4
Business Plan Commentary 3
Business Plan Commentary 2
SRN PR24 Financial Model v21a v25Jan24 resubmission
Calculation of PR24 Business Plan Costs
Latest Information on PR24 Business Plan - March 24 Explanatory Note
Latest Information on PR24 Business Plan - March 24 Explanatory Note_100424
SRN PR24 Financial Model March 24 Update_100424
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Our Business Plan 2025–30
More than 25,000 customers spent over 8,000 hours telling us what they think to help us develop it. They told us they wanted us to continue providing clean, wholesome, safe drinking water now and into the future; reduce leakage; prevent pollutions and flooding and reduce our use of storm overflows while increasing the support we provide to customers in the most vulnerable circumstances.
They were also clear on how we should do things – using new technology and nature-based solutions where we can, collaborating with community partners and showing leadership on key environmental issues.
You can also read the full suite of documents submitted to our regulator below:
Latest Information on PR24 Business Plan - March 24 Explanatory Note
Calculation of PR24 Business Plan Costs
PR24 Business Plan Data Tables March 24 Update
SRN39 Addendum Wastewater Treatment
SRN40 Addendum Storm Overflows
Business Plan Commentary 1
Business Plan Commentary 2
Business Plan Commentary 3
Business Plan Commentary 4
Business Plan Commentary 5
SRN PR24 Financial Model March 24 Update
SRN Business Plan Document Map
SRN Full Business Plan 2025-30
SRN01 Executive Summary
SRN02 Long-term delivery strategy
SRN03 Customer acceptability
SRN04 Costs and outcomes approach
SRN05 Wholesale Water (costs and outcomes)
SRN06 Wholesale Wastewater (costs and outcomes)
SRN07 Customer - HH & NHH (costs and outcomes)
SRN08 Affordability
SRN09 Deliverability
SRN10 Risk and Return
SRN11 Data and Assurance
SRN12 Long-term delivery strategy (Technical Annex)
Price Review 2024 Business Plan Tables
01 PR24 Business Plan Commentary 2023
02 PR24 Business Plan Commentary 2023
03 PR24 Business Plan Commentary 2023
04 PR24 Business Plan Commentary 2023
05 PR24 Business Plan Commentary 2023
06 PR24 Business Plan Commentary 2023
07 PR24 Business Plan Commentary 2023
08 PR24 Business Plan Commentary 2023
09 PR24 Business Plan Commentary 2023
10 PR24 Business Plan Commentary 2023
11 PR24 Business Plan Commentary 2023
12 PR24 Business Plan Commentary 2023
SRN PR24 BP October data tables
SRN Hampshire Water Transfer ACWG strategic regional water resources model
SRN Havant Thicket and Recycling strategic regional water resource model
SRN River Itchen ACWG Version strategic regional water resource model
SRN T2ST ACWG Version strategic regional water resource model
SRN West Country Sources North ACWG strategic regional water resource model
SRN West Country south Sources and Transfers ACWG Version strategic regional water resource model
SRN West Country south southern Transfers ACWG Version strategic regional water resource model
SRN Desalination ACWG strategic regional water resource model
PR19 Innovation Funding
PR19 ODI Performance Model 2024-25
PR24 2023-24 ODI Performance Model
SRN - PR24-RCV Adjustments Feeder Model
SRN 2022-23 In-period Adjustments Model
SRN Cost Sharing Total Costs
SRN Reconciliation Model Dec 2020
SRN Bioresources Revenue Reconciliation Model Dec 2020
SRN Cost Of New Debt Indexation Model Dec 2020
SRN Developer Services Reconciliation Model
SRN Gearing Outperformance Sharing Mechanism Mar 2023
SRN Land Sales Model Dec 2020
SRN PR24 Revenue Adjustments Feeder Model
SRN Residential Retail Reconciliation Model Dec
SRN RFI Model
SRN RPI CPIH Wedge True Up Model Dec 2020
SRN Water Trading Incentive Model Dec 2020
Tax Reconciliation Tool Dec 2020
SRN13 Reputation, Trust and Transparency
SRN14 Customer Insight
SRN15 Cost and Option Methodology
SRN16 Real Price Effects Frontier Shift
SRN17 Direct Procurement for Customers and Alternative Delivery
SRN18 Performance Commitment Methodologies
SRN19 Botex
SRN36 Bioresources Strategy
SRN38 Water Industry National Environment Programme
SRN46 Net Zero Carbon
SRN47 Resilience in the Round
SRN48 Operational Resilience
SRN54 Innovation
SRN55 Affordability Model Methodology
SRN56 Deliverability
SRN57 Risk
SRN58 Uncertainty Mechanisms
SRN59 Past Performance (PR19 Reconciliation Mechanisms)
SRN60 Financeability
SRN61 Cost of Equity
SRN62 Cost of Debt
SRN63 Executive Pay and Dividend Policies
SRN64 Cost of Capital
SRN25 Supply Resilience Enhancement Programme
SRN26 Water Resources - Supply
SRN27 Water Resources - Demand
SRN28 Water Resources - Smart metering
SRN29 Water resources Strategic Resource Options
SRN30 Raw Water Deterioration
SRN31 Lead
SRN32 Reservoir Safety
SRN33 WINEP - Supporting Water Abstraction
SRN34 Network and Information Systems
SRN35 Security and Emergency Measures Direction
SRN37 Industrial Emissions Directive
SRN39 WINEP - Enhancing Waste Treatment
SRN40 WINEP - Storm Overflows
SRN41 WINEP - Monitoring
SRN42 WINEP - Wider Environmental Enhancement
SRN43 WINEP - Bioresources Cake Storage
SRN44 Wastewater Growth
SRN45 First Time Sewerage
SRN49 Resilience - Power
SRN50 Resilience - Infiltration
SRN51 Resilience - Heat
SRN52 Resilience - Flooding
SRN53 Resilience - Coastal