The key to Diploma’s success is our people. Their passion, discipline and commitment to customers is what makes us great at what we do. Our decentralised structure and agile culture empower people to grow and succeed, making us a great home for ambitious individuals.
Hear from some of our business leaders Diploma’s culture >
Customer-centric
We are customer-centric, ensuring that our customers’ needs remain at the forefront
Do the right thing
We believe in doing the right thing, even when it's challenging, because integrity is non-negotiable
Accountable
Accountability is paramount, holding us responsible for our actions and decisions
Grow together
We firmly believe in growing together and becoming greater than the sum of our parts
Down to earth
We are down to earth, maintaining a culture of humility and approachability
Engaging our people
Our colleague engagement scores reflect how our people experience their day-to-day work.
78%
of colleagues feel engaged at work*
95%
agree their job makes good use of their skills and experience*
94%
feel their work is meaningful*
91%
agree their business respects difference cultures, backgrounds and ideas*
* based on 2025 employee engagement survey results (87% response rate).
Celebrating success
Our All Stars programme celebrates the exceptional contributions from individuals and teams across the Group. This year, we received more than 700 nominations recognising excellence in customer service, sustainability, innovation, teamwork and supporting others. The quality and passion behind every entry showcased the incredible work happening across all our teams, every day.
Progress on diversity
We continue to make progress on gender and ethnic diversity across senior leadership. We aim for 40% female representation in our Senior Management Team by 2030 and we’ve set an ethnicity target for senior leadership by FY27. We’re also ranked among the top three FTSE 100 companies for year-on-year progress (FTSE Women Leaders Review 2025).
CAREER AND DEVELOPMENT
We're a fast-growing, high-performing and diverse group where you're empowered to take ownership, make decisions and create meaningful impact.
With a lean, decentralised structure and fewer layers, responsibility comes early. You'll gain broad exposure across the group, develop quickly and build real leadership capability from the outset.
As we continue to grow, new opportunities emerge — from stepping into larger roles and leading strategic initiatives to working overseas. Our international footprint enables you to gain global experience while accelerating your professional growth.
If you’re ambitious, accountable, and motivated by results, you’ll find the opportunity to progress here.
Developing our leaders
Strong leadership is the engine of Diploma’s growth. In a lean, decentralised group, our Managing Directors bring strategy to life in their markets, empower their teams and ensure our businesses remain agile and entrepreneurial.
We host annual leadership events that bring together business leaders from across the Group to share ideas, strengthen networks and learn from one another - reinforcing a culture of collaboration and continuous development.
I began my Diploma career in the finance team at our London HQ and am now based in Australia, overseeing the finance function of one of our operating businesses. This reflects the organisation’s approach to developing talent, trusting people with real responsibility, and providing early exposure to senior leaders in a lean HQ environment. It is a business where you can build a long-term career, and one I have really valued being part of.
We’re proud to be part of Diploma PLC for many reasons, and one of the best is how we develop talent across our businesses. We encourage and support people to think big, collaborate and get stuff done.
What stood out most after joining Diploma was how much ownership I was given from day one. You’re encouraged to bring ideas, take initiative and shape your own development. For graduates who want real responsibility early on, it’s an environment where you can move quickly and build a meaningful career.
I joined M Seals as an apprentice many years ago, and the chance to grow, lead, and make a real difference is what’s kept me here. I’m ambitious about where we can take the business, but I’m most motivated by delivering real value for our customers and our people - because when you invest in people, the results speak for themselves.
There’s no better place to grow than with a growing business. At Hercules OEM, if you’re an engineer you’re in front of customers and you get to see new opportunities to grow the business which also means you get to grow and develop too.
hear from some of our people
@Diploma PLC’s entrepreneurial businesses are powered by brilliant people and strong leadership. Each business benefits from the networks and expertise of a large, multinational group – supporting them to deliver solutions for customers in their own way. 👉 𝗟𝗲𝗮𝗿𝗻 𝗺𝗼𝗿𝗲 𝗮𝗯𝗼𝘂𝘁 𝗼𝘂𝗿 𝗱𝗲𝗰𝗲𝗻𝘁𝗿𝗮𝗹𝗶𝘀𝗲𝗱 𝗺𝗼𝗱𝗲𝗹 𝗮𝗻𝗱 𝗲𝗻𝘁𝗿𝗲𝗽𝗿𝗲𝗻𝗲𝘂𝗿𝗶𝗮𝗹 𝗰𝘂𝗹𝘁𝘂𝗿𝗲 https://lnkd.in/eCBSnqUN
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This week we’re spotlighting some of the brilliant women across Diploma PLC. Next up is @Jette Stade, CFO at @M Seals Group , who shares her own career journey and the power of investing in people. Continuous learning, inclusivity, and opportunity help individuals grow, lead, and give back. 👉 Hear Jette’s story and the impact of #GiveToGain: https://lnkd.in/ebu_PzD2 #IWD2026 #WomenInLeadership #GiveToGain
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Jette Stade on her journey to CFO of M Seals
Jette Stade discusses her career journey at M Seals and how investing in talent drives growth
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This week we’re spotlighting some of the brilliant women across Diploma PLC. Next up is @Joanna Smith, Chief Financial Officer of @Diploma PLC’s Controls Sector, who shares a pivotal moment that reshaped her career – and set the course for seven years of record growth. 👉 Discover Joanna’s story and the impact of #GiveToGain: https://lnkd.in/en6vmrD5 #IWD2026 #WomenInLeadership #GiveToGain
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