9 Best Tender Writing Services in the UK in 2026

The best tender writing service in the UK for most SMEs is Hudson Succeed, a long-running tender writing company offering full bid writing, mentoring and tender-readiness support. If agency fees don't fit your budget, the next two picks are AI drafting tools: one built for soft FM contractors, and AI Tender Writer, which drafts public tenders in any sector.

Tender writing services range from one-person freelancers to agencies with dozens of writers. Some write the whole submission, some review your draft, and some train your team so you can bid alone. Fees are usually a day rate or a fixed fee per bid, and few firms publish them. This guide compares nine options, explains what outsourced tender writing actually buys you, and shows when an AI tool is the more sensible choice.

How we evaluated these tender writing companies¶

• UK public-sector focus: experience with Find a Tender, Contracts Finder and the Procurement Act 2023 regime. Frankly, we'd rule out any provider that can't talk you through it.
• Breadth of service: full writing, review, mentoring, training and tender finding.
• Transparency: whether fees or at least the fee model are published.
• Fit for SMEs: minimum engagement size and flexibility for smaller contracts.
• Speed: how quickly you can get help when a deadline is close.
• Honest limits: what each option doesn't do well.

We didn't use review-site star ratings or success-rate claims to rank firms, because they are self-reported and hard to compare. Our ratings reflect fit for a typical UK SME bidding for public-sector work.

1. Hudson Succeed: Best for fully outsourced tender writing¶

Hudson Succeed pricing

When to choose Hudson Succeed

• You want a long-established firm to write the whole tender for you
• You need tender-readiness support or mentoring as well as writing
• You have a high-value or strategically important bid

Where Hudson Succeed falls short

• Fees are a big cost for small contracts
• Capacity depends on booking ahead of deadlines
• Pricing is quoted per engagement, so costs are hard to compare in advance

2. CleanTender: Best for cleaning tenders¶

CleanTender pricing

When to choose CleanTender

• You run a cleaning, security, grounds, waste or catering business and bid regularly
• You can't justify agency fees on every soft FM tender
• You want method statements drafted from your own evidence and checked against sector standards

Where CleanTender falls short

• Soft FM sectors only
• No human writer involved, so strategy and challenge come from you
• You still need to review, price and own every answer

3. AI Tender Writer: Best for SMEs in any sector bidding regularly¶

AI Tender Writer pricing

When to choose AI Tender Writer

• You bid regularly in any sector and agency fees on each tender don't add up
• You have case studies and policies but not the time to turn them into answers
• You want a first draft in minutes that you then improve

Where AI Tender Writer falls short

• Does not replace strategic bid management or a human writer's challenge on a critical bid
• Quality depends on the evidence you give it
• Focused on UK public sector tenders, not private-sector RFP libraries at enterprise scale
• You still review and own every answer

4. Executive Compass: Best for tender writing plus bid training¶

Executive Compass pricing

When to choose Executive Compass

• You want tender writing plus training so your team improves
• You want an independent review of a bid you have drafted
• You value a firm that publishes plenty of free guidance

Where Executive Compass falls short

• Pricing not published
• Agency fees add up over many bids
• Capacity can be tight at busy times of year

5. Thornton & Lowe: Best for public-sector bids across sectors¶

Thornton & Lowe pricing

When to choose Thornton & Lowe

• You bid for public sector contracts across several sectors
• You want help finding tenders as well as writing them
• You have a larger contract where the fee is easy to justify

Where Thornton & Lowe falls short

• Pricing not published
• Better value for larger contracts
• You still supply the evidence and pricing

6. Bid Solutions: Best for complex and strategic bids¶

Bid Solutions pricing

When to choose Bid Solutions

• You have a complex or strategic bid that needs senior bid management
• You want support on bid strategy, not only writing
• You're bidding for a major framework or long contract

Where Bid Solutions falls short

• Pricing not published
• More than most micro SMEs need
• Needs early booking for big bids

7. Strategic Proposals: Best for enterprise bid teams¶

Strategic Proposals pricing

When to choose Strategic Proposals

• You run an enterprise bid team and need extra capacity or coaching
• You want proposal process improvement as well as writing
• You bid for large public or private contracts

Where Strategic Proposals falls short

• Pricing not published
• Geared to larger clients
• Not a low-cost option for one small bid

8. Bid Writing Service: Best for small businesses needing help on one bid¶

Bid Writing Service pricing

When to choose Bid Writing Service

• You are a small business needing help on a single bid
• You want a UK consultancy that covers public and private tenders
• You want tender finding or a bid review alongside writing

Where Bid Writing Service falls short

• Pricing not published
• Smaller team capacity at peak times
• Agency cost adds up if you bid often

9. Upwork (freelance tender writers): Best for one-off freelance help¶

Upwork (freelance tender writers) pricing

When to choose Upwork (freelance tender writers)

• You need one-off help on a small bid at short notice
• You can vet writers yourself and brief them well
• You want to compare hourly and fixed-price offers

Where Upwork (freelance tender writers) falls short

• Quality varies widely
• Many profiles lack UK public sector experience
• You manage vetting, briefing and confidentiality yourself

Tender writing services pricing summary¶

How to choose a tender writing company¶

What a tender writing service actually does¶

A good tender writing agency reads the specification and evaluation criteria, plans each answer against the marks available, interviews your team for evidence, then writes, edits and checks compliance. The value is in structure and evaluator focus, not in words alone. What it can't do is create evidence you don't have. If your case studies, KPIs and policies are thin, the fee buys polish on a weak foundation.

• Outsource when the contract is large, strategic or needs interviews and presentations.
• Outsource when you have no bid process and need someone to set one up.
• Use an AI tool when you bid often on similar contracts and have good evidence.
• Use a review-only service when you can write but want an evaluator's eye before submission.
• Check the tender's rules on AI use, in line with PPN 017, whichever route you take.

Types of tender writing service¶

Agency, freelancer, in-house or AI: how the costs compare¶

Because most agencies and freelancers quote per bid, the fairest comparison is the total cost of a year of bidding, not the cost of one tender. Work out how many bids you expect to submit, how many days of writing each one needs and who will do that work. Agency and freelance fees are usually a day rate multiplied by the days needed, or a fixed fee based on the number and length of questions. In-house writing costs staff time that would otherwise go on delivery or sales. An AI tool is a fixed subscription regardless of volume, plus the review time you still need.

What to send a tender writing company¶

The quality of outsourced tender writing depends heavily on the briefing. Writers can't invent your KPIs, case studies or staffing model, and a buyer can hold you to what you submit. Before the kick-off call, gather the following so the writer spends paid time writing rather than chasing.

• The full tender pack: specification, instructions, evaluation criteria, pricing schedule, terms and any clarification log.
• Your bid/no-bid reasoning and win themes: why you think you can win and what makes you different.
• Three to five relevant case studies with measurable results and contactable references.
• Current policies, accreditations and insurance certificates, with expiry dates.
• Your proposed staffing, management structure, mobilisation plan and any subcontractors.
• Performance data you can prove, such as KPIs, complaint rates, retention figures or audit scores.
• Your social value offer and what you can realistically measure and report.
• Previous bids and feedback, especially assessment summaries from unsuccessful tenders.

Questions to ask before you hire a tender writer¶

1. Who exactly will write our bid, and what UK public-sector tenders have they worked on in our sector?
2. How do you gather evidence from our team, and how much of our time will you need?
3. How many drafts and review rounds are included, and when will we see the first draft?
4. Is the fee fixed, or can it rise if the tender changes or clarifications add work?
5. Who owns the finished content, and can we reuse it in future bids?
6. Do you use AI tools in your writing, and how do you check accuracy? This matters if the buyer asks about AI use under PPN 017.
7. How do you handle confidentiality and conflicts of interest if you're also writing for a competitor on the same tender?

Red flags when choosing a tender writing service¶

• Guaranteed wins or unverifiable win-rate claims. No provider controls the buyer's evaluation, your price or the competition.
• No interest in your evidence. A writer who doesn't ask for case studies and data will produce generic answers.
• Reusing the same text for many clients. Evaluators notice identical phrasing across bids.
• No written scope. Agree deliverables, drafts, deadlines and fees before work starts.
• Success fees that take a percentage of contract value. Read the terms closely and check they don't create conflicts with the buyer's rules.

Getting the most from outsourced tender writing¶

Treat an agency engagement as an investment in your bid library, not a one-off purchase. Ask for the final answers in editable Word format, keep the evidence you gathered for the writer, and record the buyer's feedback when it arrives. Under the Procurement Act 2023, unsuccessful bidders on above-threshold contracts receive an assessment summary explaining their scores against the award criteria. Share that with your writer and use it to improve the next bid, whether you write it yourself, hire help again or draft it with an AI tool.

Other questions buyers and bidders ask¶

Can AI replace a tender writing service?

For regular, similar bids where you have good evidence, an AI tool can produce the first drafts an agency would otherwise write, at a fixed monthly cost. For large, complex or strategic bids that need interviews, presentations and bid management, experienced human writers still add real value.

What should I look for in a tender writing company?

Relevant UK public-sector experience in your sector, a clear process for gathering your evidence, a written scope with fixed deliverables and deadlines, clear content ownership, and honest answers about capacity. Ask for anonymised examples and speak to the person who will actually write your bid.

Can a tender writer help with the selection questionnaire?

Yes. Many tender writing services complete the Procurement Specific Questionnaire and check your Central Digital Platform information, though pass/fail answers depend on facts only you can supply, such as accounts, insurance and past contracts.

Related guides: bid writing services, best bid writers UK, tender consultants UK, tender software and how to write a tender response.