The challenge
As transformation accelerated, ESB’s delivery model was under pressure to scale efficiently.
The business needed to increase delivery capacity, speed and confidence, while controlling cost and maintaining quality across a highly complex, regulated environment.
Traditional onshore delivery models, limited test automation and inconsistent quality practices made this difficult. Without change, ESB faced rising costs, increased delivery risk and growing pressure on programmes underpinning customer services and national infrastructure.
ESB required a trusted partner to help industrialise quality at enterprise scale — without compromising reliability.
The solution
Together, Expleo and ESB established a scalable, optimised quality capability enabling faster, more cost‑effective delivery with greater confidence — across both major transformation programmes and business‑as‑usual change.
Rather than optimising individual projects in isolation, the focus shifted to a long‑term, enterprise‑wide approach to quality, aligned with ESB’s business strategy and sustainability goals.
This partnership enables ESB to:
- Scale delivery without linear cost increases
- Protect critical services while accelerating change
- Reinvest into strategic programmes
What were the results?
ESB now has a robust, cost-efficient foundation to support continuous transformation across its IT portfolio.
Key business benefits delivered:
- Quantified savings
- Stronger consistency and governance across the organization
- Sustained return on investment (ROI) beyond individual projects
- Improved service resilience for customers
How did we help?
As ESB’s strategic Quality Assurance partner for the past 18+ years, Expleo provides more than testing capability. We bring enterprise leadership, governance and industrial-scale delivery models that align quality directly with business outcomes.
By combining deep technical assurance expertise with a strong understanding of ESB’s regulatory, operational and sustainability challenges, Expleo supports ESB in delivering change that is faster, safer and more cost-effective — year after year.
We helped through:
- Enhanced Testing: Improved end-to-end testing from requirements to generation for better speed and quality.
- Faster Automation: Streamlined how projects are qualified for automation to speed up tool and tech decisions.
- Technical Services Team: Formed a joint team to deliver specialized support and high-standard service models.
- Stakeholder Collaboration: Partnered with senior leaders to identify and scale cost-saving digital initiatives.
- Offshore Resourcing: Used a multi-location model to reduce cost.
What where the results?
Customer testimonial
Expleo has been a trusted Quality Assurance partner to ESB for over 18 years, supporting us through significant periods of digital transformation across our business. Their ability to combine deep technical expertise with a strong understanding of our operational and regulatory environment has enabled us to scale delivery efficiently while maintaining the high levels of quality and reliability our customers expect. Through a collaborative approach, Expleo has helped us strengthen testing and automation capabilities, establish effective governance, and optimise our delivery model. This has improved consistency across our technology portfolio, enhanced service resilience, and delivered measurable cost efficiencies that can be reinvested into strategic transformation initiatives. Expleo continues to be a valued partner, helping ESB deliver change with greater speed, confidence and control.
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