Workplace Investigation
Leaders in Workplace Investigation
At CMP, we conduct over 300 workplace investigations each year, including investigations into grievances, disciplinary matters, whistleblowing concerns, company-led investigations, student complaints, and never-events within the NHS.
As the UK’s largest provider of workplace investigations, we ensure every investigation is carried out with professionalism, impartiality, and a deep understanding of best practice standards.
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Independent Workplace Investigations You Can Trust
With more than thirty years of experience, CMP is the UK’s leading provider of workplace investigation services. We support organisations across every sector to resolve complex and sensitive issues with clarity, fairness and care. Our team of specialist investigators is based throughout the UK, led by our Head of Investigations, ensuring consistent quality and reliable outcomes nationwide.
As a trusted workplace investigation provider, CMP delivers impartial and evidence-based findings that help employers make confident, defensible decisions. Each investigation follows a clear structure designed to uphold procedural fairness and minimise risk. We focus on listening, understanding context and maintaining confidentiality at every stage, protecting both the organisation and the individuals involved.
Why Independent Workplace Investigations Matter
Workplace conflict and misconduct can undermine trust, morale and reputation. Handling such matters internally can create perceptions of bias or inconsistency. Choosing an external workplace investigator brings independence, credibility and reassurance for all parties. CMP’s investigators combine professional expertise with an understanding of workplace culture, ensuring that even the most complex cases are approached with balance and empathy.
Our independent workplace investigations cover a wide range of issues, from bullying and harassment to discrimination, whistleblowing, safeguarding and grievance cases. We recognise that each situation is unique and often emotionally charged. Our investigators are trained to manage sensitive conversations with professionalism and respect, ensuring that evidence is gathered thoroughly and that every voice is heard.
Specialist Support for Misconduct, Bullying and Harassment Investigations
CMP is trusted by organisations to deliver misconduct investigations in the workplace that are comprehensive, transparent and procedurally sound. We also conduct bullying and harassment investigations with an emphasis on fairness and dignity for everyone involved. Our trauma-informed approach recognises that such cases can be deeply personal and require careful handling to protect wellbeing while maintaining investigative integrity.
Every investigation is planned and managed with meticulous attention to detail. We produce clear, concise reports supported by robust evidence and objective analysis. This allows employers to act confidently, knowing that decisions are based on sound information and a defensible process.
Setting the Standard in Workplace Investigation Services
CMP is one of the few investigation providers in the UK to hold BS 102000 accreditation, a recognised standard that demonstrates excellence in professional investigation. We are also the only organisation to have established Best Practice Standards for workplace investigations, setting the benchmark for quality and ethical practice in the field.
Our processes are supported by an experienced operations and quality assurance team, ensuring consistency across every case. From the first instruction to the final report, we provide transparency and accountability throughout the process.
Why Organisations Choose CMP
Organisations choose CMP because we combine investigative expertise with a deep understanding of workplace dynamics. We work discreetly, efficiently and with integrity, helping employers navigate complex employee relations challenges while maintaining trust and fairness.
Our workplace investigation services are designed to support leaders in making informed, confident decisions that stand up to scrutiny. Whether you require a single external workplace investigator or ongoing support through a retained service, CMP provides the capacity, experience and assurance you need.
Get in touch to discuss how CMP’s independent workplace investigations can help your organisation resolve concerns, uphold fairness and strengthen its workplace culture.
Our Workplace Investigation Services:
Workplace Investigation Services
If you have a complex workplace investigation or a situation involving high-level employees, our expert investigators are ready to assist. Organisations refer cases to us for various reasons, including when the complaint involves senior figures, requires external oversight, or exceeds internal capacity. No matter the scale or complexity, CMP’s experienced team will ensure the matter is investigated thoroughly and impartially.
Call-Off Contract for Investigations
For larger organisations, CMP provides a call-off contract for investigations. This flexible service allows you to refer cases as needed and access an investigator quickly, ensuring continuity and professionalism in every investigation. Clients benefit from favourable rates, and a dedicated investigator is assigned promptly to handle each case independently and efficiently.
Workplace Investigation Training Courses
For organisations looking to develop internal investigative capacity, CMP offers ILM-endorsed Professional Workplace Investigator training. Our six-day course is the leading training programme in the industry, designed to equip participants with the skills and confidence needed to conduct thorough investigations, regardless of the nature of the matter.
We also provide shorter courses for specific skills development, including appeal managers and HR managers who want to deepen their understanding of investigative best practices.
Bespoke Case Management
With our call-off contract clients, CMP provides a bespoke approach to case management. We assign a dedicated team, including an account manager, investigators, and delivery coordinators, to each client. This ensures personalised service, full transparency, and timely updates throughout the investigation process.
Our comprehensive service includes monthly or weekly case reports with detailed analysis of issues, parties involved, and outcomes, giving clients full insight into the progress and results of ongoing investigations.
Bullying & Harassment Services
When concerns about bullying or harassment arise, organisations need a process that is clear, fair and trauma informed. Through our call-off contracts, CMP provides a tailored approach to managing these cases.
Each client has a dedicated team made up of an account manager, specialist investigators and delivery coordinators. This gives you a personal service with full transparency and timely updates throughout the investigation.
We provide regular case reports either monthly or weekly. These outline the issues raised, the parties involved and the progress made. You get a clear view of each investigation so you can respond with confidence.
Trusted By:
We are the partner of choice for employers on workplace relations — and have been since 1989.
Description
London Underground, the world’s oldest underground railway, employs over 12,000 staff and serves millions of passengers each day. With a complex workforce and intense operational pressures, LUL needed a dependable external partner to deliver high-quality harassment and grievance investigations, and to support mediation needs that exceeded the capacity of their internal teams.
CMP was appointed under a call-off contract to provide specialist investigations, skilled mediation and targeted training. We immersed ourselves in LUL’s culture, working closely with HR, union representatives and senior leaders to deliver a process that staff could trust. Through robust case handling, faster resolution times and a consistently high standard of delivery, we helped London Underground realise tangible cultural and financial benefits. Trust in the process increased, case durations fell, and appeal volumes dropped significantly.
Our work not only saved the organisation millions in potential costs but also drove sustainable improvements in workplace relationships and decision-making. CMP’s contract has since been renewed and extended multiple times, reflecting the ongoing value we deliver to the organisation.
Key Services
- Full delivery of harassment and grievance investigations
- Average case resolution time reduced to 30 days (previously 60)
- Independent mediation with a 95 percent agreement rate
- Bespoke training for HR professionals and Deciding Officers
- Data reporting and analysis to drive organisational learning
“Our data indicates that we have seen a saving in the cost of bullying and harassment cases to the organisation of £3 million over a 4-year period. There has also been a reduction of 75 percent in bullying and harassment ET claims.”
Senior Business PartnerLondon Underground
