What Is Social Value in Public Procurement? A Practical Guide for Suppliers

Public sector buyers don't just want the cheapest bid anymore. They want suppliers who create tangible benefits for the communities they serve.

That's the idea behind social value — and it's become one of the most important evaluation criteria in public procurement today. In many UK and European contracts, social value now accounts for up to 20% of a bid's total score. Miss it, and you're handing competitors a head start before the technical evaluation even begins.

For suppliers, this is both a challenge and an opportunity. If you're not thinking about social value, you're leaving scoring points on the table. If you do it well, it can be the differentiator that wins you contracts where price and quality are otherwise neck and neck.

This guide explains what social value is, how buyers score it, and how to build a credible offer that holds up under scrutiny.

What Is Social Value?

Social value refers to the wider economic, social, and environmental benefits that a supplier's activity creates beyond simply delivering a contract. Think of it as the answer to: what else does this supplier's work do for society?

When a public sector buyer awards a contract worth millions of euros or pounds, they are increasingly asking whether that supplier's presence in their community makes things better — for residents, workers, local businesses, and the environment.

Social value can include:

• Employment and skills: Creating local jobs, offering apprenticeships, providing training

• Supply chain diversity: Using local SMEs or social enterprises as sub-contractors

• Environmental impact: Reducing carbon emissions, achieving net zero targets, minimising waste

• Community investment: Supporting local charities, volunteering, donating goods or services

• Inclusive practices: Paying the living wage, promoting diversity and inclusion in hiring

• Wellbeing: Supporting employee mental health, reducing precarious working conditions

Why Social Value Has Become a Scoring Criterion

Social value is not a new concept. But its weight in tender evaluations has grown significantly — and that trend is accelerating for three reasons.

Legislation. In the UK, the Social Value Act (2012) requires public bodies to consider social value in service contracts. A 2020 government policy note went further, mandating central government departments award social value a minimum weighting of 10% in contract evaluations. Across Europe, the 2014 EU Procurement Directives explicitly allow buyers to include social and environmental criteria as award factors — not just selection filters.

Climate commitments. Governments across Europe have set ambitious net zero targets. Public procurement is increasingly seen as a lever to achieve them. Buyers want suppliers with credible carbon reduction plans, green supply chains, and measurable environmental pledges.

Competitive pressure. As more suppliers incorporate social value into their bids, those who don't are increasingly disadvantaged. It has shifted from "nice to have" to a standard expectation in many public sector contract categories.

Pro tip: Before bidding, check the award criteria carefully. If social value is scored — even at 5% — it warrants a serious, tailored response. A generic paragraph will score close to zero.

How Buyers Evaluate Social Value

Buyers assess social value in different ways depending on jurisdiction, but most approaches share common elements.

The TOMs Framework (UK)

Many UK buyers use the Themes, Outcomes, and Measures (TOMs) framework, which organises social value into five themes:

1. Promote local economic growth — local jobs, apprenticeships, supply chain spend

2. Support safer, stronger communities — volunteering, social enterprise partnerships

3. Create a healthier, fairer society — living wage, diversity, employee wellbeing

4. Decarbonise and clean up — carbon reduction, environmental management systems

5. Champion equality in the workforce — inclusive hiring, disability access

Each theme breaks down into specific commitments, and each commitment carries a monetary proxy value — converting your promises into a comparable financial figure. This lets buyers rank competing social value offers objectively.

European Approaches

Across Europe, social value criteria tend to be more flexible and contract-specific. Buyers may require:

• Environmental management certifications (e.g., ISO 14001)

• A percentage of contract spend directed to local or SME sub-contractors

• Employment of long-term unemployed individuals

• Carbon footprint declarations and reduction targets

• Training hours delivered per €100k of contract value

Always read the tender documentation carefully to understand how social value will be scored and what evidence format is expected.

How to Build a Credible Social Value Offer

The challenge for most suppliers isn't willingness — it's knowing what to commit to and how to prove it. Here's a practical approach.

1. Audit What You Already Do

Before promising anything extra, understand your current baseline. How many people do you employ locally? Do you already pay the living wage? What percentage of your supply chain spend goes to local businesses? What are your current carbon emissions?

This baseline matters because buyers reward additionality — commitments that go beyond your normal business activity, created specifically for this contract. Anything you already do as standard practice doesn't score as new social value.

2. Make Commitments Proportionate to the Contract

Social value expectations scale with contract size. A two-year £200,000 maintenance contract has different expectations than a five-year £10 million infrastructure programme.

Look at similar types of tenders in your sector to understand what level of commitment is typical. Over-promising on a small contract looks as unconvincing as under-delivering on a large one.

3. Only Commit to What You Can Track

The biggest mistake suppliers make is promising social value they cannot evidence. Public buyers can and do check — some contracts require quarterly reporting against your commitments.

If you promise 80 hours of community volunteering over a two-year contract, you need a mechanism to log, report, and evidence every hour. Build your reporting process at the bid preparation stage, not after you've won.

Pro tip: Express commitments in monetary terms where possible. Using proxy values (e.g., one apprenticeship created = £33,735 TOMs proxy value) makes your social value offer directly comparable to competitors and demonstrates a level of sophistication that scores well.

4. Align With the Buyer's Own Priorities

Most public bodies publish a social value or sustainability strategy. Read it before writing your response. Buyers award higher scores to social value offers that connect logically to their stated goals — not just generic commitments you've recycled from a previous bid.

This is part of broader supplier positioning — demonstrating that you understand the buyer and have shaped your offer around their world.

5. Back It Up With Evidence

Buyers want confidence that you can deliver, not just promise. Include:

• Case studies from past contracts where you delivered measurable social value

• Named references from previous buyers who can confirm delivery

• Internal policies (living wage commitment, diversity and inclusion, environmental management)

• Any relevant accreditations (Living Wage Employer, ISO 14001, B Corp, Social Enterprise mark)

Social Value as a Competitive Advantage for SMEs

Large suppliers sometimes appear to have an edge in social value — they can point to bigger absolute numbers. But buyers increasingly assess commitments proportionately.

For SMEs, social value can actually be a genuine differentiator. Local presence, direct community ties, and a managing director who personally champions social impact often carry more conviction than a corporate policy document. If you're an SME navigating public procurement, our guide on how public tendering works for suppliers covers how to position yourself effectively across all evaluation criteria.

Pro tip: Don't underestimate authenticity. A small business that genuinely employs people from the local community, pays the living wage, and reinvests in local suppliers has a compelling social value story — it just needs to be articulated clearly and with evidence.

How Mercell Supports Your Social Value Strategy

Winning on social value starts with finding the right contracts — opportunities where your authentic social value offer genuinely aligns with what the buyer is looking for.

With Mercell, you can identify buyers whose procurement strategies heavily weight social and environmental criteria, monitor upcoming tenders in your region where local presence is specifically valued, and use market intelligence to understand how competitors are positioning their social value offers.

Social value done well is a genuine competitive advantage in public tendering. Mercell helps you find the contracts where it counts most.

Conclusion

Social value has become a core part of modern public procurement — not a compliance checkbox, but a scored evaluation criterion that can determine who wins.

Suppliers who take it seriously — who build specific, measurable commitments into their bids, align with buyer priorities, and back every promise with evidence — consistently outperform those who treat it as an afterthought.

The good news: you likely already deliver more social value than you realise. The goal is to make it visible, measurable, and credible — then use it to win.