Warren Percival Healthcare, Legal and Finance Business Development Director +44 (0)7793 365862


For a business of any size and in any sector, it is crucial to its longevity and financial security to receive correct and forthright advice. This could be related to successfully concluding a merger and acquisition (M&A) or effectively identifying and managing risks before an asset is put up for sale. RSK is highly experienced in supporting the legal and professional services sector across a range of contentious and non-contentious environmental, health, safety, environment social governance and engineering issues ranging from detailed expert witness support to planning and due diligence assignments. Whether it is working as expert witnesses on criminal, civil or planning matters or technical due diligence assignments as part of M&A projects, we engage our group-wide expertise to provide you with an efficient and wide-ranging service.

Review Expert Witness brochure

Review Due Diligence brochure

Combining decades of expertise

RSK has more than 30 years of experience of assisting its clients during corporate transactions, at public inquiries and acting as expert witnesses on criminal and civil cases. Our highly trained and knowledgeable staff can provide expert witness evidence under robust questioning. We can aid clients if planning applications are disputed or during civil or criminal cases to help solve litigation issues and get to the root of the issue at hand. RSK’s wide-ranging expertise can help with straightforward or complex problems, including due diligence, expert witness, ecology and rural sciences, health and safety, land contamination, geotechnics and engineering (including a dedicated materials team covering construction disputes and concrete failures),environmental impact assessments and environmental/health and safety compliance.

A single source for multiple solutions

Our expert witness services are informed by more than 70 experts with real-life experience acting on civil or criminal cases, supported by a team of more than 3500 specialists. Unlike other UK-based consultancies, our expert witnesses are technical specialists involved in the day-to-day work of their specific disciplines and do not just provide expert witness services. Moreover, our experts work on practical issues daily and are involved in understanding modern techniques and changes to policy and best practice.

From a due diligence perspective on M&A/divestment projects, RSK supports its clients in implementing solutions to enhance investment returns by helping them to move from basic compliance through to a more mature proposition of value enhancement for continual improvement or help them to protect the value of their assets.

Understanding your concerns

Our clients often have compressed timescales for completion of transactions, be they for divestment purposes or from an M&A perspective. Our specialists ensure we provide commercially sensitive and timely information to support the project. We are also often asked to provide support on identifying and negotiating, in close consultation with the appointed legal team, on indemnities for the sale and purchase agreement, any ‘price chip’ opportunities and, importantly for vendors, looking at helping to prevent any ‘hard stop’ in the process by effectively identifying and managing risks before the assets are put up for sale.

Alleviating challenges

RSK provides a highly tailored, technical team from across its group-wide companies to provide the client with the best possible solution. A dedicated point of contact and management team, with a project manager or director, will project manage the client’s case to ensure all areas are covered effectively, on time and to budget

Our expertise

Due diligence
The level of investigation RSK undertakes is tailored to the needs of the proposed transaction. RSK works with direct company investors, technical advisers, legal counsels to manage liabilities, protect the value of investments and develop opportunities to create value in a transaction. RSK can provide everything required to conclude due diligence assignments quickly, accurately and cost-effectively.

Expert witness
We provide dedicated experts with real-life experience working on criminal and civil matters. We also provide evidence at planning inquiries. Our services range from building materials to ecology and rural sciences, to health and safety and land contamination. We also provide planning and environmental impact assessment services to clients hoping to obtain planning consent.

Management and compliance
We have been involved in several waste-related expert cases involving construction waste, industrial permitting, waste sites and a Crown Court case involving four operational waste processing sites.