Choosing an evaluation consultant? Learn what charities, not-for-profits and public sector teams could look for when appointing an external evaluator.
How to Choose the Right Evaluation Consultant for Your Project
If you are a charity, not-for-profit or public sector organisation looking for an evaluation consultant in the UK, it can be hard to know who to appoint.
From the outside, evaluators can look quite similar. Most will talk about impact, evidence, methods and reporting. Most can write a proposal that sounds credible. But the real question is not simply who writes the most polished tender.
The real question is: who will help you understand your project clearly, collect the right evidence, and turn that evidence into something you can actually use?
That matters because evaluation is often commissioned at an important moment. You might be preparing for a major grant, working through a development stage, or starting delivery after a significant funding award. There is usually a lot at stake. You need confidence that the evaluation will satisfy funders, support learning and help your team make better decisions.
So how do you choose the right evaluation consultant?
Start by asking people you trust
One of the best ways to find a good evaluator is still the simplest: ask around.
Ask your peers. Ask partner organisations. Ask funders, advisers, trustees or other senior leaders who have commissioned evaluation before. If someone has had a good experience with an evaluator, they will usually be able to tell you what made the process work.
This is useful because evaluation is not just a technical service. It is a working relationship.
You need someone who can understand the project, work well with senior leaders and delivery teams, ask good questions, make sense of complexity and communicate findings clearly. A recommendation from someone who has already worked with an evaluator can tell you a lot more than a website or proposal alone.
Look for relevant experience and previous work
Track record matters.
If your project involves community engagement, arts and culture, heritage, nature, health, wellbeing or place-based work, it helps to appoint someone who understands those settings. They do not need to have evaluated an identical project, but they should understand the reality of delivery.
Good evaluators know that participation can be uneven, delivery teams are busy, and community work does not always fit neatly into a spreadsheet. They know how to gather evidence without creating unnecessary work.
Ask to see examples of previous reports or outputs. A useful evaluation report should not just look impressive. It should be readable, honest and practical. You should be able to imagine giving it to trustees, funders, partners or senior colleagues and seeing how it would support decisions.
Ask how they would approach the project
Before asking for a full quote, it is worth having an informal conversation.
Look for evaluators who are willing to offer a 20 to 30 minute chat before they write a proposal. This gives you a much better feel for how they think. What questions do they ask? Do they understand the project quickly? Do they spot the right challenges? Do they make the process feel clearer or more complicated?
It also helps you work out whether you would enjoy working with them.
At The Evaluator, we usually try to have this kind of conversation before writing a quote. It helps us understand the client as well as the project. A tender brief can tell us what the work is, but a conversation often tells us how the organisation thinks, what they are worried about, and where evaluation could be most useful.
That matters because a good evaluator should not just price a list of pre-decided outputs. They should help you work out what level of evaluation is proportionate.
Sometimes organisations ask for more than they need. Three reports might sound thorough, but they may not be the best use of the budget. In some projects, one strong evaluation framework, a small number of well-designed tools and good support with data collection will be far more useful.
Do not judge only by the polish of the tender
A clear proposal matters. But the best evaluation partner is not always the organisation with the glossiest tender.
A larger consultancy may have a dedicated tender writer or more capacity to produce a very polished document. A smaller specialist team may not be able to spend a full week making a proposal look beautiful, because the senior people writing the quote are also the people designing, managing and delivering the work.
That difference matters.
A polished tender does not always tell you who will actually do the evaluation, how involved senior people will be, or whether the evaluator will stay close to the reality of the project once delivery begins.
So look beyond the procurement document. Ask who will lead the work, who will analyse the evidence and who will write the report.
Good evaluation depends on judgement, not just process.
Choose someone who makes evaluation useful
Good evaluation is not about collecting as much data as possible. It is about collecting the right amount of data, in the right way, and using it well.
That is where the best evaluation consultants add value. They help you avoid wasted effort. They design tools that work in real settings. They reduce duplicated requests. They make the process manageable for staff, volunteers, partners and participants.
At The Evaluator, we describe this as being creatively simple.
The process should feel simple for the people taking part. A survey should be easy to complete. A feedback activity should feel welcoming. A workshop should generate useful insight without feeling over-engineered.
Behind the scenes, the analysis may be complex. But that complexity should not be passed on to the client. The evaluator’s job is to do the hard thinking, make sense of the evidence, and present it back clearly.
A good evaluation consultant should bring relevant sector experience, proportionate methods, clear communication, honest analysis and practical recommendations that help funders, boards and delivery teams understand what the evidence means.
Look for honesty, not just positive findings
Evaluation is not marketing.
A good evaluator should recognise success, but they should also tell you what the evidence does and does not show. That kind of honesty is what makes evaluation credible.
A useful report explains what worked, for whom and why. It notices where outcomes were weaker or where delivery changed. It recognises the limits of the evidence. It helps you understand what is worth continuing, what needs adapting and what questions remain.
That should not feel threatening. Done well, honest evaluation gives organisations more confidence, not less.
Three questions to ask before appointing an evaluator
If you are choosing an external evaluator, these three questions will tell you a lot.
- Can you show us relevant previous work or connect us with a past client? This helps you understand both the quality of their outputs and what they are like to work with.
- How would you approach this project? This shows whether they can think strategically, not just respond to a brief.
- Who will actually deliver the evaluation? This helps you understand whether the people writing the proposal will be close to the work itself.
What a good evaluator should leave behind
A good evaluation should leave you with more than a report.
It should leave you with knowledge and a clearer sense of where you are going.
When organisations do not have good evidence, they can end up worrying about everything. Every issue feels equally urgent. Every decision feels uncertain. But when you look carefully at the numbers, the stories, the feedback and the wider context, priorities often become much clearer.
Good evidence helps you make decisions with more confidence.
It can show you what to scale, what to adapt, what to stop, what to explain to funders and what to focus on next.
So when you are choosing an evaluation consultant, do not only ask who has written the most polished tender.
- Ask who will understand your project.
- Ask who will make the work proportionate.
- Ask who will be honest with you.
- And ask who will turn complex evidence into clear learning you can actually use.
Planning to appoint an evaluator?
If you are preparing a brief, developing a funding bid or starting a newly funded project, we are happy to have an initial conversation about what level of evaluation would be proportionate, useful and manageable for your team.
