How to Write a Winning Bid for UK Government Contracts

What Is a Government Bid?

A government bid — also called a tender response or PQQ/ITT submission — is a formal document submitted by a supplier in response to a public sector contracting opportunity. In the UK, public sector organisations are legally required to run competitive procurement processes for contracts above certain financial thresholds. This means suppliers must win the right to provide services through a structured bidding process rather than direct appointment.

UK government bids are evaluated against published criteria covering both the quality of your proposed approach and your pricing. Quality typically accounts for 60–80% of the overall score, which means how well you write your responses matters more than being the cheapest option.

Step 1: Read the ITT Thoroughly Before Writing a Word

The Invitation to Tender (ITT) is the document that contains everything you need to know about the opportunity. Before writing anything, read it in full at least twice. Pay attention to:

• Evaluation criteria — understand exactly what each question is assessing and how marks are allocated
• Word limits — these are strictly enforced; going over will result in your response being truncated or disqualified
• Mandatory requirements — anything described as "must" or "essential" is non-negotiable
• Submission deadline and format — late submissions are almost always rejected
• Clarification deadline — the window in which you can ask the buyer questions about the ITT

Use the clarification period. If anything in the ITT is ambiguous, submit a clarification question. Buyers are required to publish all clarification questions and answers to all bidders, so you are not giving anything away by asking.

Step 2: Make a Bid/No Bid Decision

Not every opportunity is worth bidding for. Before committing to a bid, assess whether it genuinely fits your organisation. Key questions to ask:

• Do you have relevant experience in this sector and at this contract value?
• Do you meet all the mandatory requirements?
• Is the contract margin viable given your bid costs?
• Do you have the capacity to deliver if you win?
• Have you worked with this buyer before, or do they know your organisation?

A structured bid/no bid decision framework helps you make this call consistently rather than chasing every opportunity. BidWriter includes a built-in Bid/No Bid scoring tool that evaluates each opportunity against your criteria.

Step 3: Plan Your Response Structure

Good bid writing starts with planning, not writing. For each question, identify:

• The core requirement being assessed
• The evidence you have that directly addresses it
• The most relevant case studies or examples
• Any accreditations, policies, or certifications that are relevant

Structure longer responses using a clear format. Many experienced bid writers use the STAR method (Situation, Task, Action, Result) for case study questions. For methodology questions, use a clear numbered or headed approach that mirrors the buyer's own structure where possible.

Step 4: Write to the Evaluation Criteria

This is the most important principle in bid writing: your response must address what the evaluator is marking you against, not what you want to say about your organisation.

Read each question alongside its evaluation criteria. If the criteria ask for "a clear methodology for stakeholder engagement", your response must explicitly describe your stakeholder engagement methodology. If it asks for "evidence of delivering similar contracts", provide specific, quantified examples — not generic statements about your capabilities.

Evaluators are working through potentially dozens of submissions. They do not have time to infer what you mean. State things explicitly and directly.

Step 5: Use Evidence and Quantify Your Outcomes

The single biggest difference between good bids and winning bids is the use of specific, quantified evidence. Compare these two statements:

Weak: "We have extensive experience delivering digital transformation projects in the NHS."

Strong: "We delivered a digital transformation programme for NHS Midlands (2023–2024) that reduced patient appointment waiting times by 34% and achieved a 91% user satisfaction score across 12,000 staff."

The second statement gives the evaluator something concrete to score. Build your bid library with quantified case studies so this evidence is always at hand when you need it.

Step 6: Review, Score, and Refine

Before submission, conduct a quality review of your response. Ask a colleague who has not been involved in writing to read each answer and score it against the evaluation criteria as if they were the buyer. Where they score you low, rewrite.

Check every response against the word limit. Cut anything that does not directly answer the question or add to your score. Evaluators do not reward length — they reward relevance.

Check compliance: have you answered every mandatory question? Have you provided all required supporting documents? Have you formatted the submission exactly as specified?

Step 7: Submit and Track

Submit through the buyer's specified portal before the deadline. Keep a copy of everything you submitted. Once you receive the outcome, always request a debrief — whether you won or lost. Debrief feedback is invaluable for improving future bids.

Track all your bids, outcomes, and debrief notes in a central system. Over time, this data will show you where you consistently score well and where you need to improve.

How BidWriter Helps

BidWriter is designed around this exact workflow. It uses AI to generate structured first drafts for each tender question, drawing on your bid library of past evidence and case studies. You can assign questions to team members, track progress against deadlines, and use the built-in Evaluator to score your responses before submission. Try BidWriter free →

Write better bids with AI

BidWriter helps UK procurement teams write stronger responses, track deadlines, and win more contracts.