Contract Vendor Audit Services

Contract/Vendor Audits play a critical role in identifying non-compliance, mitigating risks and recovering substantial sums. Our methodology is proven to be effective, while our approach safeguards vendor relationships.

Graeme Robertson

Audit Director

Contact Graeme Meet the team

Who we can help

OIL & GAS
EXPLORATION & PRODUCTION
OILFIELD SERVICES

How we can help

JOINT VENTURE & CONTRACT AUDIT
JOINT VENTURE & DRILLING AUDITS
COMPLETION ACCOUNTS
AUDIT & ASSURANCE
VIRTUAL FINANCE FUNCTION
CORPORATE FINANCE
GLOBAL MOBILITY
LITIGATION SUPPORT
WHISTLEBLOWING
FRAUD PREVENTION & INVESTIGATION

RESPECTED BY OPERATORS AND VENDORS ALIKE

Talk to us about the work we've done

Contract Vendor audits are valuable in a marketplace where operations can be very complex, involving several vendors and spread across several remote locations. Our audits will determine whether a vendor’s management systems, data and performance are complying with the terms and conditions of their contract with you. Where we discover that’s not the case, our intervention will correct the issues and recover any costs owed to you.

Our teams have exceptional credentials and are respected within the industry. They have a deep working knowledge of commercial arrangements and enjoy good relationships with vendors, which can be crucial to keeping your operations running smoothly.

WHY DO YOU NEED US?

For a variety of reasons, your vendors’ self-reporting may be inaccurate, and their invoices may not always match what was stipulated in the terms of the contract. This can easily result in overpayment which, if replicated across multiple vendors and several operations, could seriously impact your profitability and in a worst case scenario, the viability of your business.

The complexity of dealing with numerous vendors across multiple projects only adds to the risk. Yet it’s unlikely you will have the time and resources to investigate the issue whilst still managing your operations and your other business pressures. In comparison, our highly experienced auditing team is dedicated to the task and has the skills and tools to examine, resolve and report quickly and accurately.

In addition, they can flag up areas in your contracts that could be amended to reduce risk, pinpoint any operational weaknesses that could lead to cost savings and create an environment where vendors are more aware of their contract accountability – leading to fewer problems in the future.

Commercially driven tax and financial advice provided by people who understand my business and who care about its success. A dedicated partner led team of real advisors with real commercial focus.
Derek Smith, Maritime Developments Limited
AAB deliver on time, every time and respond promptly to my queries and needs. I would, and have, recommended AAB to businesses who have since joined them.
Graham Mackie, Dales Engineering Services Limited
Having AAB as our business partners gives me peace of mind as they listen, participate and work with us to ensure our goals are achieved.
Gillian Irvine, NorDan

THE BENEFITS

We are experienced, thorough and work quickly, using tech wherever appropriate to analyse extensive data in close detail
We uncover any disparities between the vendor’s billing and the contract terms
We’ll also reveal and alert you to non-compliance with agreed operating procedures
There is the potential to recover significant sums, especially when multi-year contracts are involved, such as overbilling or unused funds
Where your operations are widespread, our audit can also highlight any variations in how regional parts of your organisation apply their controls
We may also be able to show you how you can improve data-sharing within your organisation, and your own efficiency and controls
Our report will highlight any opportunities to reduce costs and improve quality control – critical in a challenging and competitive environment
By improving transparency and trust, we can help you build stronger relationships with your vendors.

Talk to us about contract vendor audits

A COMPREHENSIVE AND WORTHWHILE REPORT

We’ll save you time by managing the entire Contract Audit process, whilst liaising with you and the vendor. We will:

Issue and agree audit scopes well in advance of the audit fieldwork
Tailor our work to focus on key areas, such as deliverables, expenditure levels against contract terms, billings and payments
Identify potential compliance issues for risk mitigation purposes, cost efficiencies and process improvement
Verify the accuracy of the vendor’s data, to make contract compliance more transparent
Report to you immediately on conclusion of the field work, identifying any cost recoveries.

As well as reviewing the vendor’s systems, we’ll appraise your relevant control systems to identify any scope for improvements, and report back on how you might implement them.

Speak to us about the support we offer

Sign up for the latest industry insights

Blog16th Apr 2026
Companies House and the ECCTA: 5 Ways To Stay Compliant
The Economic Crime and Corporate Transparency Act (ECCTA) became UK law in October 2023. But this wasn’t just another regulatory update. It marked a major shift in how Companies House operates. The register is no longer a passive filing system. It is becoming an…
By Nikki McNally
View more
Blog6th Apr 2026
FRS102 Lease Accounting Changes: 3 Ways PE Firms Can Prepare
The updated FRS102 lease accounting rules are now in force for periods beginning on or after 1 January 2026. The changes introduce a fundamentally different lease accounting model under UK GAAP. Much of the discussion so far has focused on…
By Greg Smythe
View more
Blog6th Apr 2026
Returning to the UK from Middle East: Key tax considerations
First and foremost, for anyone affected by the ongoing conflict in the Middle East, the priority must be to follow the latest travel advice and, above all, stay safe. The current situation may mean individuals have had to unexpectedly return…
By Lynn Gracie
View more
Blog3rd Apr 2026
Employment Rights Act: 9 changes to prepare for this April
The Employment Rights Act has caused quite a stir, with many employers struggling to navigate this major overhaul to workplace rights. The legislation, which has been championed by the UK Government, aims to strengthen employment protections and drive economic growth. But the changes, coming into force throughout 2026…
By Natalie O’Hare
View more