Internal Communications Manager

Sizewell C’s business is to design, finance, construct, commission, operate, maintain, and eventually decommission the nuclear power plant and related infrastructure at Sizewell C in Suffolk. Overall, whilst the Company is in the construction phase, the Boards’ principal focus is on the development and construction of Sizewell C on time, on budget and to the highest quality and safety standards. The Company is maturing to meet all these requirements.

Sizewell C is economically regulated by OFGEM under the RAB model similar to other UK electricity distribution networks and Thames Tideway.

Sizewell C construction strategy is to replicate the design of Hinkley Point C, using the majority of the same supply chain, but innovating in the way it is delivered to achieve savings in time and cost of around 20%. The CCO will need to be guided by and incorporate lessons learned from the Hinkley Point C commercial delivery to achieve Sizewell C’s ambition.

Following Financial Completion and Revenue Commencement, Sizewell C is fully funded and is owned by; The Secretary of State for Energy Security and Net Zero representing HM Government, La Caisse, Centrica, EDF and Amber Infrastructure.

Internal Communications Manager

Location: Sizewell C Site, Leiston, Suffolk. 3 - 4 days per week on site, with occasional travel to London Contract: Permanent, full time Salary: £57,000 to £66,000 per annum, depending on experience, plus bonus and benefits.

Benefits include:

• Up to 5% annual bonus
• 28 days annual leave plus bank holidays, increasing to 30 days after five years
• Defined contribution pension scheme (up to 7.5% employee / up to 15% Sizewell C)
• Access to benefits portal where additional benefits can be purchased including private healthcare, discounted gym memberships, electric scheme, etc
• Opportunity to purchase extra holiday

Closing date: Thursday 1st of October 2026

Please note: We reserve the right to close this vacancy early should we receive a high volume of suitable applications. To avoid disappointment, we encourage interested candidates to submit their application as soon as possible.

The Opportunity

Sizewell C is one of the UK’s most ambitious infrastructure projects, and brilliant communication will be essential to bringing our people with us on the journey.

We’re looking for an outstanding Internal Communications Manager who can turn complex, technical and fast moving information into clear, engaging stories that people understand and act upon.

Working as part of the Site Internal Communications team, you’ll act as a trusted communications partner to leaders, functions and project teams. You’ll help shape and deliver communications covering everything from workforce experience, culture and safety to construction activity, project milestones, operational change and organisational performance.

This is a varied, visible and hands on role for someone who loves finding the story, sharpening the message and creating communications that genuinely connect people to the bigger picture.

Why Join as an Internal Communications Manager?

This is not a role where you’ll simply wait for a finished brief to land.

You’ll be at the heart of a fast paced and constantly evolving project, finding stories, advising stakeholders and shaping communications from the earliest stages. You’ll take complex, technical or sensitive information and turn it into content that is clear, practical and engaging.

Whether you’re communicating an important safety message, supporting a major milestone, helping leaders connect with the workforce or celebrating the people delivering the project, your work will help shape how Sizewell C feels, communicates and operates.

There are two opportunities available, each supporting a broad portfolio of business priorities. One position will have a stronger focus on day to day site communications and delivery, while the other will support wider site operations and corporate priorities, including safety and workforce communications. The portfolios may continue to evolve as the project grows.

What You’ll Be Doing

• Partnering with leaders, project teams, operational functions and subject matter experts to plan and deliver effective communications
• Taking a brief, finding the strongest angle and turning it into a clear and compelling story
• Translating complex, technical, operational or sensitive information into accessible and audience focused content
• Creating communications plans, briefings, presentations, talking points, campaigns and workforce updates
• Supporting communications across safety, wellbeing, culture, construction, logistics, milestones and operational change
• Supporting crisis communications and the communication response to significant incidents, emerging risks and sensitive issues.
• Advising and constructively challenging stakeholders to improve the clarity, timing and impact of communications
• Supporting leadership communications, workforce forums, roadshows, engagement sessions, recognition activity and site visits
• Managing and improving internal channels, including digital platforms, screens, newsletters, briefings and email communications
• Building strong relationships with contractor communications teams and delivery partners to create consistent messaging across the site
• Spotting emerging priorities, risks and communications needs early and responding confidently in a fast moving environment
• Using storytelling to celebrate progress, showcase great work and build pride, connection and belonging across Sizewell C

What We're Looking For

We're looking for a talented communicator who can take complex or incomplete information and turn it into clear, engaging and impactful communications.

You'll bring:

• Experience in internal communications, corporate communications, employee engagement, stakeholder engagement or a similar communications roleExceptional writing, editing and storytelling skills, with the ability to adapt your styl