Tendering is often viewed as a sales exercise: identify an opportunity, submit a competitive bid, and win the work. In practice, the process carries significant commercial and legal risks long before a contract is awarded.
A successful tender is not simply one that secures a project. It is one that secures work on terms that are commercially viable, legally manageable, and capable of being delivered profitably. A poorly understood client, an overlooked contract clause, or an error in a pricing schedule can turn a promising opportunity into an expensive problem.
This guide explains the key commercial and legal risks that arise during the tendering process, how to identify them early, and the practical steps you can take to protect your position before investing substantial time and resources into a bid.
Summary
- Know Your Buyer Before You Bid
- Pricing Risks and Document Errors
- Terms and Conditions: Where the Real Legal Risk Sits
- Public Procurement: The Legal Framework and Your Rights
- Challenging a Tender Decision
- Commercial Objectives: What Do You Actually Want?
Know Your Buyer Before You Bid
One of the most common mistakes in tendering is focusing exclusively on the opportunity while giving little attention to the organisation issuing the tender. Before committing significant resources to a bid, it is worth understanding who you may be contracting with and whether the opportunity aligns with your commercial objectives.
Tendering blind creates avoidable risks. A contract may appear attractive on paper but become problematic if the buyer has unrealistic delivery expectations, a history of disputes with suppliers, or poor payment practices. Winning work from the wrong client can sometimes be more damaging than losing the tender altogether.
Basic due diligence should form part of every bid strategy. Depending on the nature of the opportunity, this may include reviewing publicly available financial information, seeking industry references, researching the buyer’s reputation, and examining previous procurement activity.
You should also consider whether you are competing against an incumbent supplier. Existing providers often benefit from established relationships, detailed operational knowledge, and a track record with the buyer. That does not mean the contract cannot be won, but it may influence how you assess the opportunity and allocate bidding resources.
A tender process begins long before the submission deadline. Understanding who you are bidding to work for can help you make better decisions about whether the opportunity is worth pursuing at all.
Pricing Risks and Document Errors
Many tender submissions are lost simply because avoidable errors found their way into the final submission.
Pricing documents are often among the most complex parts of a tender. They may contain multiple worksheets, linked formulae, assumptions, provisional sums, and pricing structures that differ significantly from normal industry practice. Leaving these documents until the final days before submission increases the risk of mistakes and reduces the opportunity to seek clarification.
Common problems include:
- Formula errors within pricing spreadsheets
- Ambiguous instructions regarding how costs should be presented
- Pricing schedules that fail to reflect how the work will actually be delivered
- Missing information or assumptions that create uncertainty during evaluation
Tender documentation can also change throughout the procurement process. Buyers frequently issue clarification responses, revised specifications, updated pricing schedules, and amendments to the terms and conditions.
Failing to monitor these updates can have serious consequences. In some cases, suppliers submit pricing based on superseded documents or fail to respond to mandatory requirements introduced through clarification notices. The result may be disqualification, regardless of the quality of the underlying proposal.
As a practical matter, pricing documents should be reviewed at an early stage, not treated as a final administrative task. The earlier inconsistencies or uncertainties are identified, the more time there is to seek clarification and build a pricing model that accurately reflects both the scope of work and the commercial realities of delivery.
Terms and Conditions: Where the Real Legal Risk Sits
For many businesses, the most significant legal risks in a tender process are not found in the specification or evaluation criteria. They are found in the contract terms and conditions.
One of the most common mistakes bidders make is treating the contract as something to review after they have been selected as the preferred supplier. By that stage, the buyer may have little incentive to negotiate, particularly where the tender documents stated that bidders were expected to accept the proposed terms.
The safest approach is to review the terms and conditions as early as possible. If there are provisions that create unacceptable risk, you need to identify them before committing substantial resources to the bid.
Particular attention should be given to:
- Liability clauses that expose you to unlimited financial risk
- Indemnity provisions that go beyond normal market expectations
- Insurance requirements that exceed your available cover
- Performance obligations that may be difficult or impossible to satisfy
- Liquidated damages provisions that could significantly affect profitability
A clause may appear commercially reasonable until it is tested in practice. We have seen situations where contractors invested considerable time and expense pursuing a tender, only to discover at a late stage that the contract included liability obligations their insurers would not cover. At that point, the bidder faced an unenviable choice: withdraw from the process or accept a level of risk that was commercially unjustifiable.
The legal review of tender terms should therefore be viewed as part of the bid/no-bid decision. A profitable contract can quickly become loss-making if the allocation of risk is disproportionate to the value of the work.
Equally important is understanding which terms may be negotiable and which are likely to be non-negotiable. Early identification of problem clauses gives you the best opportunity to raise concerns, seek clarification, or adjust your pricing to reflect the risks you are being asked to assume.
Public Procurement: The Legal Framework and Your Rights
Private sector tenders generally allow parties significant freedom to structure the procurement process as they see fit. Public sector procurement is different. Contracting authorities must comply with legal obligations designed to promote transparency, fairness, and competition.
The introduction of the Procurement Act 2023 has brought together much of the UK’s public procurement framework into a single legislative structure. While the detailed rules vary depending on the type and value of the contract, the underlying principle remains the same: suppliers should be treated fairly and evaluated against the criteria that have been published in advance.
For bidders, this matters because procurement law does more than regulate contracting authorities. It also creates rights that suppliers may be able to enforce where a process has been conducted unlawfully.
A contracting authority cannot simply prefer an existing supplier or introduce new evaluation criteria after bids have been submitted. Equally, evaluators should apply scoring methodologies consistently and in accordance with the published tender documents.
The Procurement Act 2023 also introduced a revised exclusions framework. In certain circumstances, suppliers may be excluded from public procurement opportunities due to previous misconduct, poor performance, or other specified grounds. Understanding these rules is important for both contracting authorities and suppliers, particularly where historic disputes or performance issues may affect future opportunities.
For most bidders, procurement law only becomes relevant when something appears to have gone wrong. However, understanding the framework before submitting a tender can help you identify potential issues much earlier and make informed decisions about how to respond if concerns arise.
Challenging a Tender Decision
Not every unsuccessful tender justifies a legal challenge. Procurement processes are competitive by nature, and losing a bid does not necessarily mean the evaluation was flawed.
That said, there are situations where a challenge may be appropriate. Examples include:
- Evaluation criteria being applied inconsistently
- Mathematical or scoring errors affecting the outcome
- Evaluators taking account of factors that were never disclosed to bidders
- Decisions that appear irrational or unsupported by the published scoring
- Unlawful exclusion from the procurement process
The difficulty is that suppliers often have very little time to assess whether a challenge is viable.
What We Often See in the First 10 Days
One of the most common misconceptions is that procurement challenges begin with court proceedings. In reality, the first few days are usually spent gathering information and assessing whether there is a genuine legal issue worth pursuing.
When concerns arise about a tender decision, the immediate priority is often to obtain as much information as possible about how the evaluation was conducted. This may include requesting detailed scoring information, evaluator feedback, moderation records, and other documents that help explain how the final decision was reached.
Only once the evaluation process has been examined can a bidder begin to assess whether there are viable grounds for challenge and whether pursuing those grounds makes commercial sense.
Time Limits Matter
Procurement challenges operate under some of the shortest and most unforgiving time limits in the legal system. In public procurement, contracting authorities are generally required to observe a standstill period between notifying bidders of the award decision and entering into the contract. In many cases, this gives unsuccessful bidders only 10 days to assess the decision, obtain further information, and decide whether they need to take action.
If you believe there has been a breach of procurement law, time moves quickly. Relevant documents may need to be reviewed, legal grounds assessed, and strategic decisions made within a matter of days.
Under the Procurement Act 2023, a supplier generally has 30 days from the date it first knew, or ought to have known, that grounds for a claim had arisen to commence proceedings. Leaving matters until the end of the standstill period can therefore significantly reduce the time available to investigate and prepare a challenge.
Where proceedings are issued before the contract is entered into, an automatic suspension may prevent the contracting authority from awarding the contract until the dispute is resolved or the court orders otherwise.
For that reason, bidders who suspect something has gone wrong should seek advice as early as possible. Even if a formal challenge is ultimately not pursued, obtaining an early assessment can help you understand your position before critical deadlines expire.
Commercial Objectives: What Do You Actually Want?
Before pursuing a procurement challenge, it is worth stepping back and asking a simple question: what outcome are you trying to achieve?
Many suppliers understandably focus on whether the evaluation was fair. However, procurement disputes are rarely just about legal principle. They also involve time, cost, management resource, business relationships, and future opportunities.
Depending on the circumstances, a supplier’s objectives may include:
- A re-evaluation of the tender
- A re-run of the procurement process
- Financial compensation
- Greater transparency about how the decision was reached
- A negotiated commercial outcome without formal proceedings
The strongest legal challenge is not always the strongest commercial option.
We have advised businesses that were understandably frustrated by an award decision and believed there may have been flaws in the evaluation process. After reviewing the available evidence, the focus shifted from whether a challenge was technically possible to whether it would deliver a worthwhile commercial outcome. In some cases, the likely costs, management time, and impact on future relationships outweighed the potential benefits.
The reverse is also true. Where a contract represents a significant commercial opportunity and there is evidence that the procurement process may have been conducted unlawfully, early action can be entirely justified.
A sound procurement strategy therefore requires more than identifying legal grounds for challenge. It requires a realistic assessment of what success would look like and whether the likely outcome justifies the investment required to achieve it.
Taking a Commercial Approach to Tender Risk
Risk is an unavoidable part of tendering. Every bid requires an investment of time, money, and resources with no guarantee of success. However, many of the most costly mistakes can be avoided through early preparation and informed decision-making.
Before submitting a tender, take time to understand the buyer, review the pricing documents carefully, and examine the contractual terms you may ultimately be asked to accept. These steps are often far easier and less expensive than dealing with the consequences after a contract has been awarded.
Where public procurement is involved, it is equally important to understand your rights as a bidder. If concerns arise about the fairness of an evaluation process or the legality of an award decision, acting quickly can make a significant difference to the options available.
Getting the early stages right often shapes everything that follows. Whether you are assessing a tender opportunity, reviewing contract terms, or considering a procurement challenge, obtaining legal advice at an early stage can help you understand the risks, identify practical options, and make decisions with greater confidence.
If you are preparing a significant tender submission, reviewing onerous contract terms, or considering whether to challenge a procurement decision, Witan’s construction team can help you assess the legal and commercial risks involved. We can advise on tender documentation, contract negotiations, procurement challenges, and dispute resolution strategies. To discuss your situation, contact us on 0300 303 2071 or email us at info@witansolicitors.co.uk.
