How to Write a Winning Bid: 10 Principles

The bid that wins isn't always the best service. It's the best-communicated service. That's frustrating to hear when you're genuinely good at what you do — but it's the truth, and pretending otherwise won't help you win contracts.

Evaluators are human beings reading a stack of submissions on a Tuesday afternoon. They're scoring against defined criteria. They're looking for evidence. They don't want to dig for your key points — they want to find them immediately and tick the box. Your job is to make their job easy. These ten principles will help you do exactly that.

1. Answer exactly what's asked — not what you want to say

This sounds obvious. It isn't. Most bids answer the question the supplier wishes the buyer had asked — not the one they actually did. If the question is "how will you manage contract mobilisation", the answer is about mobilisation. Not about your company's history. Not about your broader capabilities. Mobilisation.

Before you write a word, read the question three times. Underline the active verb. That's what they want. Answer that.

2. Structure around the scoring criteria, not your company

Evaluators score against a framework. They're not reading your bid cover to cover — they're looking for evidence against each criterion. If your response is structured around how your company works rather than how you'll meet their requirements, the evaluator has to do translation work. They won't. They'll score you lower.

Use the scoring criteria as your headings. Literally. If the criteria are mobilisation, ongoing performance management, and exit strategy — those are your three sections. Don't hide good content under your own headers.

3. Use specific evidence, not claims

"We have extensive experience in this sector" is a claim. "We've delivered three similar contracts for NHS trusts in the last four years, two of which were retendered and we retained" is evidence. One of these gets scored. One doesn't.

Every time you make a claim, ask yourself: what's the evidence for this? Then include the evidence and remove the claim. The evidence is more persuasive anyway.

4. Address the buyer's risk, not just their need

Every public sector buyer is worried about something. Service continuity. Cost overruns. Staff not turning up. Technology that doesn't work on day one. Scrutiny from audit. Your bid needs to show that you've thought about what could go wrong — and that you have specific plans for it.

Buyers don't just want to know you can deliver. They want confidence that you won't cause them a problem. Proactively address the risks they're carrying and explain how you'll manage them.

5. Show you understand their organisation specifically

Generic bids lose. Not because they're badly written — but because they could have been submitted to any buyer. The evaluator can feel that. They want to see that you know who they are: their scale, their challenges, their context.

Read their annual report. Look at their current strategy document. Check what they've said publicly about their priorities. Then reference it — specifically. "We understand that Camden Council is currently working toward its Climate Action Plan target of net zero by 2030..." That one sentence signals more about your understanding than three pages of generic capability.

6. Treat quality and price as separate arguments

Don't defend your price in your quality response. Don't let the price section bleed into the methodology. Evaluators score them separately — and mixing them creates confusion. Your quality response should stand completely on its own: if the price were irrelevant, would this response still be convincing? If not, it needs work.

7. Proofread specifically for weasel words

Weasel words are weasel words because they let you avoid commitment. "We aim to". "We endeavour to". "We will seek to ensure". "Where possible, we will". Every one of these is a signal to an evaluator that you're not actually committing to anything. They reduce your score.

• •Replace "we aim to" with "we will" — or don't include the commitment at all
• •Replace "we endeavour to ensure" with a specific process or metric
• •Replace "where possible" with the actual constraint you're managing
• •Replace "we are committed to" with what you're actually doing

Do a find-and-replace on every one of these phrases. Then rewrite each instance with a concrete commitment or delete it.

8. Write for the evaluator, not the decision-maker

The person reading your bid is usually a mid-level procurement officer or a service manager. Not a director. Not a board member. Write for them. Clear language. Short sentences. No jargon they'll need to Google. The decision-maker might read the scores summary — they won't read your 12-page methodology section.

9. Get someone not involved to read it cold

You're too close to your own bid. You know what you meant, so you'll read what you meant rather than what you wrote. Find someone who hasn't been involved — ideally someone who doesn't know your business well — and ask them to read it and tell you what's unclear, what's missing, and what questions it leaves unanswered.

The questions they ask are exactly the questions your evaluator will have. Answer them before submission.

10. Treat the debrief as data

You will lose bids. Your job is to lose them faster — meaning you learn something from each one that improves the next. Request the debrief. Ask for your criterion-by-criterion scores. Ask what the winning bid did that yours didn't. Ask specifically what evidence was missing.

The feedback is free. It's the most direct insight into what your target buyers are scoring for. Use it — systematically, in writing, as a standing document you return to before every bid.

None of these principles are complicated. They're discipline. They require you to prioritise the evaluator's experience over your own comfort with how you describe your company. Do that consistently, and you'll see your scores move.