Interim Finance Modelling Manager

Job title Interim Finance Modelling Manager  Division Finance & Commercial Location Hybrid - Clearwater Court - RG1 8DB
Contract type Fixed term/Secondment Full/Part-time Full-time Salary Offering up to £90,000 per annum depending on skills and experience Job grade C Closing date 20/01/2026

We are seeking an experienced Financial Modelling Manger to join our dynamic Corporate Finance team on a 12-18 month Fixed Term Contract.

This is a unique opportunity to analyse the key financial drivers of the company, understanding and optimising outcomes for customers, debt investors, shareholders, and relevant regulators. As well as giving a holistic view of the company, this role is unique in its broad scope of skills, requiring technical ability, conceptual thinking, influencing and communication skills.

• Operate and develop the financial and regulatory model with a focus on financeability, investability and customer bills
• Review of in-year and forward looking credit metrics
• Support scenario analysis as part of financial and strategic planning cycle including the Long-Term Viability Statement used in the Annual Report
• Work closely with various internal teams including FP&A, Integrated Business Planning and Regulation to ensure development of robust long-term business plans
• Assist in the calculation of shadow RCV and Return on Regulated Equity (RoRE)
• Ensure the Corporate Model reflects the latest developments in financial regulatory economics and capital structure
• Populate various tables within the Annual Performance Report
• Assist in answering questions from various stakeholders (debt investors, banks and shareholders) on financial forecasts

• Flexible individual with a strong finance background, for example accountancy qualified (CCAB) or equivalent
• Experience in development and operation of financial models
• Experience of sophisticated data analysis
• Ability to think critically and commercially, with a high attention to detail, in order to assess business issues and opportunities
• Expert knowledge of Excel and utilisation of the tool for financial modelling.
• Good understanding of corporate finance principles
• Influencing skills with individuals at all levels in the business including senior management.
• Excellent communication, relationship management and presentation skills
• High level of business awareness
• Enthusiastic and pro-active approach

This is an exciting time to join Thames Water as we continue to deliver on our turnaround plan, offering the opportunity to become part of our strategic journey.

• Competitive salary up to £90,000 per annum
• Annual Leave - 26 days holiday per year, increasing to 30 with the length of service. (Plus bank holidays)
• Annual Bonus.
• Private Medical Health Care.
• Contributory pension – Defined Contribution - Maximum of 12%
  -2x employee contribution.
• Personal Medical Assessments – Open to all once a year.
• Access to lots of benefits to help you take care of you and your family’s health and wellbeing, and your finances – from annual health MOTs and access to physiotherapy and counselling, to Cycle to Work schemes, shopping vouchers and life assurance.
• Performance-related pay plan directly linked to company performance measures and targets.

We’re the UK’s largest water and wastewater company, with more than 16 million customers relying on us every day to supply water for their taps and toilets. We want to build a better future for all, helping our customers, communities, people, and the planet to thrive. It’s a big job and we’ve got a long way to go, so we need help from passionate and skilled people, committed to making a difference and getting us to where we want to be in the years and decades to come.

Thames Water is a unique, rewarding, and diverse place to work, where every day you can make a difference, yet no day is the same. As part of our family, you’ll enjoy meaningful career opportunities, flexible working arrangements and excellent benefits.

If you’re looking for a sustainable and successful career where you can make a daily difference to millions of people’s lives while…