Technology Services Specialist Framework (TSSF)

• Value: £40M

SWS seek specialist partners providing deep expertise in Customer & Corporate platforms such as SAP ECC/CRM/BAS, ServiceNow, web channels, and supporting corporate systems. Focused on targeted enhancements, engineering, analysis, support and automation, enabling high‑quality improvements and domain‑specific capability across customer and corporate processes. Estimated Lot Value £2m to £5m per annum

• Value: £64M

SWS seek specialist partners providing deep expertise in Wholesale platforms and OT‑adjacent technologies—Maximo, ArcGIS, PI, ThingWorx and bespoke operational apps. Focused on targeted engineering, enhancements, data‑driven improvements, smart asset/smart network enablement, and modernisation of legacy systems to elevate operational performance and field service experience. Estimated Lot Value £4m to £8m per annum

• Value: £32M

SWS seek specialist partners providing deep expertise in data engineering, analytics, BI development, governance and emerging AI capabilities. Focused on targeted delivery of pipelines, models, visualisation, semantic layer enablement, data quality, cataloguing and domain‑specific insights - accelerating the organisation’s shift to data‑driven operations and AI‑ready platforms. Estimated Lot Value £2m to £4m per annum

• Value: £24M

SWS seek specialist partners providing deep expertise in digital workplace technologies, delivering targeted engineering, automation, low‑code solutions, migration support and optimisation across Microsoft 365, SharePoint Online, Windows 11, VDI and collaboration tools. Focus is on shaping user experience, enhancing productivity, modernising legacy estates, enabling citizen developers, and supporting niche workplace capabilities needed across diverse user personas and operational environments. Estimated Lot Value £1m to £3m per annum

• Value: £56M

SWS seek specialist partners providing deep expertise across specific network, cloud, compute or security domains - supporting targeted engineering, optimisation, migration, resilience uplift, and niche operational capabilities. This includes specialist skills in Azure, VMware, Cisco/Meraki/ISE, firewalls, storage/backup platforms, Kubernetes/OpenShift, OT‑safe connectivity, observability tooling and security services. Focus is on precision technical delivery, modernisation of legacy infrastructure components, and specialist support for complex hybrid IT/OT environments. Estimated Lot Value £3m to £7m per annum

• Value: £32M

SWS seek specialist partners delivering deep cyber expertise, providing targeted services in SecOps, threat intelligence, penetration testing, risk assessments, security architecture, governance & assurance, and OT‑specific NIS compliance activities. Focused on precision technical support—augmenting in‑house teams, improving security posture, and introducing advanced defensive techniques, threat modelling, and security consultancy for complex hybrid IT/OT environments. Estimated Lot Value £2m to £4m per annum

• Value: £32M

SWS seek specialist partners to modernise and deliver site‑based Operational Technology across Southern Water’s treatment works and network sites. This Lot requires deep expertise in PLC, HMI, SCADA, telemetry, RTUs, Process Control Networks, OT networking, segmentation and NIS‑aligned remediation, as well as hands‑on engineering, installation, commissioning and minor civils. The partner will support the uplift of legacy OT systems to secure, standardised, fully supported platforms - driving improved visibility, governance, resilience, and operational performance across a multi‑site regulated OT estate. Estimated Lot Value £2m to £4m per annum

• Value: £48M

SWS seek specialist partners providing targeted, high‑quality capability augmentation across Project & Programme Management, Agile Delivery, Business Analysis, Solution Architecture and Testing/Quality Assurance. This Lot focuses on supplying skilled practitioners and mature delivery practices to complement Southern Water’s in‑house Digital teams - enhancing capacity, consistency and speed of change across a diverse annual portfolio. Partners bring specialist frameworks, tooling, and domain expertise to uplift delivery maturity, improve outcomes, and strengthen end‑to‑end change capability across all business and technology domains. Estimated Lot Value £4m to £6m per annum

• Value: £16M

SWS seek specialist partners to deliver targeted, high‑quality integration services across Southern Water’s digital estate, enhancing and modernising integrations built on WebMethods, SAP PI/PO, API Gateway, MFT and FME. This Lot requires deep technical expertise to design and engineer scalable integrations, reduce technical debt, strengthen API and data security, modernise legacy ESB patterns, and enable cloud‑ready, microservice‑aligned integration approaches - supporting platform teams, improving B2B connectivity and accelerating safe, reliable change. Estimated Lot Value £1m to £2m per annum

• Value: £16M

SWS seek specialist partners to accelerate automation and AI adoption across Southern Water, delivering high‑quality, scalable automations across Power Platform, RPA tools, Alteryx, Purview‑aligned governance and emerging AI agentic capabilities. This Lot focuses on expert design, build and support of automation solutions, reducing manual effort in systems like Maximo, SAP, ArcGIS and Workday, while helping to mature the Automation & AI CoE through education, enablement, standards, reusable components and responsible AI practices. Estimated Lot Value £1m to £2m per annum