Seven years of progress for Sellafield’s major project delivery partnership

/ 8 June 2026 / 0 Comments

Sellafield’s Programme and Project Partners (PPP) has made strong progress over the past 7 years.

The partnership is delivering multiple major projects, improving safety, and bringing benefits to local communities

Building important new facilities

Two major projects are moving into their final delivery stages:

The Sellafield Product and Residue Store Retreatment Plant (SRP).
The SIXEP Continuity Plant (SCP).

Two further projects are also moving forward:

The Box Encapsulation Plant Product Store 2 (BEPPS2) is now in early construction.
The Lightly Shielded Store 1 (LSS1) is finalising its design ahead of going into construction.

More projects are also in the pipeline and benefiting from the partnership’s expertise. These will help safely manage and store nuclear material from older parts of the site.

Leading the way in safety

The launch of a dedicated Health, Safety and Wellbeing Hub in 2022 has supported industry-leading safety performance, including more than 10 million hours worked without a reportable incident as of May 2026 - the second time this milestone has been achieved since 2019.

Delivering smarter solutions

PPP is improving how work is done on the Sellafield site.

Examples include:

A new concrete plant built in 2022, reducing traffic and cutting carbon emissions.
A large land-clearance project in 2025, finished early and under budget. The cleared land will be used for future facilities like LSS1.

Improving how work is done

PPP has helped change how big projects are delivered at Sellafield.

Teams champion early engagement, shared ownership and mutual accountability. By bringing partners in sooner, PPP is improving cost control, scheduling and predictability, while also creating a culture where challenges are tackled together from the outset.

In 2024, a long-term delivery partner enterprise was completed.

This helps:

Improve planning and costs.
Support local businesses.
Bring new ideas into projects sooner.

PPP now works with around 300 suppliers, with 36% based in the North West and 62% classed as small to medium-sized enterprises (SMEs).

The partnership approach has been built on the foundation of ISO 44001, the international standard for collaborative business relationships.

PPP has also been recognised with awards from the Institute for Collaborative Working - reflecting not just what is delivered, but how it is delivered - through trust, collaboration and a shared sense of purpose.

Saving money and adding value

It's original business case committed to £700 million in benefits across the life of the contract. To date, £1.3 billion in benefits has been validated and £582 million delivered through the model, cost savings and avoidance.

The partnership has created over £180 million in social value to date. This includes:

£139 million spent with local suppliers.
£44 million spent with small businesses.

Over 19,500 volunteering hours has been delivered. Volunteers support programmes like Chapter One, helping children improve their reading.

Around 1,300 people work across its projects, with 57% drawn from the local Cumbria and Warrington areas.

PPP continues to support careers through apprenticeships, graduate schemes, academy programmes, and more than 70 internships.

The partnership is the first nuclear delivery organisation to achieve Investors in Diversity accreditation and is ranked among the country’s most inclusive employers.