AboutThe Orange
Partnership

Chartered Accountants providing cost assurance on major open book contracts

The Orange Partnership

UK defined cost audit experts

For 20 years we have specialised in defined cost audit and resolving cost commercial issues. Trusted on the most complex and high-risk UK capital projects, we bring a wealth of accountancy knowledge, audit expertise and construction experience to the table. With our deep audit know-how and industry insights, you can have full confidence in our opinions and outputs

About TOP

The Orange Partnership is a specialist Chartered Accountancy practice with the single purpose of providing maximum transparency over costs on major open book contracts

As the recognized UK experts in cost assurance we employ a risk-based assurance approach that adheres to best practice International Audit Standards. This ensures our work is efficient, targeted, and cost-effective

We collaborate closely with commercial and project teams to drive transparency and achieve right-first-time cost applications. Over the past 20 years, we have worked on many of the largest and most complex cost reimbursable projects in the UK, supporting clients across various sectors, including roads and rail, civil nuclear, defence, energy, aviation, and utilities

Our qualified and experienced audit and commercial teams instil confidence you are not being over-charged and remove the likelihood of nasty surprises and reputational damage further down the line

We are BSI ISO 9001 accredited for the provision of cost assurance on major capital and operational projects

The complexity of your needs and the stage of your contracts will determine the nature and duration of support we provide

Benefits to you

We offer a unique blend of forensic accountancy and construction commercial knowledge. This means you can be confident we will unpick and resolve your complex cost issues quickly and cost-effectively
Our 20 years of experience, conducting over a thousand defined cost audits on the top 20 UK contractors, provides us with in-depth insights into construction industry practices, construction law, and common abuses. You can be assured our teams are adept at spotting even the smallest inconsistencies, ensuring anomalies are identified and explained
Our team comprises typically qualified accountants with extensive construction commercial and NEC contract knowledge. We foster a collaborative approach, developing supportive relationships with clients, suppliers, and audit teams
You will gain a detailed understanding of defined costs, enabling targeted cost reduction efforts where they will have the most significant impact. Control weaknesses in processes will be identified, and pragmatic actions will be agreed upon to minimise future overcharges
Our unique risk-based methodology and qualified team means you can be confident in our opinions and outputs and that we will quickly identify areas of concern, saving you time and money

Who we work with