CPI reviews

2.9

39% would recommend to a friend

(175 total reviews)
avatar

Frank Millar

37% approve of CEO

25% positive business outlook

CPI has an employee rating of 2.9 out of 5 stars, based on 175 company reviews on Glassdoor which indicates that most employees have an average working experience there. The CPI employee rating is in line with the average (within 1 standard deviation) for employers within the Pharmaceutical & Biotechnology industry (3.5 stars).

Reviews by job title

175 reviews
3.0
May 5, 2026
Recommend
CEO approval
Business Outlook

Pros

Good work life balance Friendly people

Cons

Weak progression and compensation leads to a mid-level void The experienced staff that stick it out have little incentive to move the needle Business is grant based, money gets sucked up by inefficiencies. End up delivering essays instead of real products Support staff like IT, HR and Procurement thrive on writing rules, systems and obsessing over health and safety. Zero effort to reduce blockers for engineers. IT actively try to increase them. HR run time-wasting training courses, which are belittling to scientists and engineers

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CPI Response
2w
Thank you for taking the time to share your feedback. We’re pleased to hear your positive comments about the work–life balance and the friendly, supportive colleagues across the organisation. We also recognise the concerns you’ve raised around career progression, compensation, and the experience of working within a grant‑funded environment. These are important topics, and we understand how they can shape day‑to‑day experience and long‑term engagement. On progression and compensation specifically, we want to clarify that we have made significant changes this year to strengthen fairness and transparency. Our approach to pay is guided by three principles: pay fairly as one company, pay sustainably, and performance‑led pay. We have revised our merit process to ensure increases are awarded fairly across roles and salary ranges. Updated guidance on our pay framework and the 2026 merit process has been shared with colleagues to ensure clarity and alignment. We appreciate your suggestions on giving teams greater autonomy and investing more deeply in specific areas. Exploring new ways of empowering teams and improving commercial outcomes is an ongoing conversation, and feedback like this helps shape that thinking. Thanks again for your feedback and we wish you the best for the future.
2.0
Apr 20, 2026

Fantastic projects but poor management and culture

Anonymous employee
Recommend
CEO approval
Business Outlook

Pros

Labs filled with state of the art equipment, fantastic scientists and engineers who know their stuff, work on truly interesting projects working on innovated ideas to improve the UK science and engineering infrastructure and pipeline. Flexible working is available, HR encourage it.

Cons

Favouritism is rife. If you are not on that list, you won’t progress. ELT and HR changing the yearly merit review at last minute to reduce cost. Repeat year on year reduction in employee satisfaction surveys but don’t listen to feedback. Cost cutting is obvious as people are leaving or going on long term leave and rather than hire they are asking people to do two jobs with little or no compensation. Flexible working is encouraged by HR but looked down upon by local management and you are expected to do more than your hours. Management and PMs emailing late in the evening. Pay is well below industry average across all technology areas, with no increase with inflation in salary bands. People promoted 5 years ago still sitting at bottom of bands as bands have moved but pay hasn’t.

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CPI Response
2w
Thank you for taking the time to share your thoughts. We’re pleased to hear your positive comments about our facilities, the calibre of our scientists and engineers, and the innovative work taking place across CPI. We also recognise and take seriously the concerns you’ve raised around culture, workload, and communication. These are important areas, and feedback helps us focus on where improvement is needed. We do, however, want to address the points raised about pay, as some of this does not reflect the changes we have made. Our pay approach is guided by three core principles: pay fairly as one company, pay sustainably, and pay being performance led. This year we have revised our merit process to ensure increases are awarded fairly across all roles and salary ranges. We recently published updated guidance on the intranet that explains our pay framework, how merit for 2026 is calculated, and how it is distributed. We encourage colleagues to review this information for full transparency and clarity. We regularly benchmark our salaries against the external market and review them annually to ensure we remain competitive. We’ve also taken steps to improve transparency by making salary ranges for each role available to all employees on our intranet. Your feedback on culture, workload pressures, and the experience of flexible working at local levels is equally important. We are committed to addressing these issues and continuing to build an environment where people feel supported, valued, and able to thrive. Thank you again for your honesty and for contributing to the ongoing conversation about how we improve. If you would like to share more, we welcome further confidential feedback through our HR channels or management discussions.
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