Search "Power BI consultancy UK" and you will get pages of agencies that all sound the same. Certified partners, decades of experience, end-to-end solutions, trusted by FTSE 100s. None of that tells you whether they will be any good for your project. After a decade of doing this work, here is the guide we would give a friend who was about to hire one.
Start by being honest about what you actually need
Most "Power BI consultancy" requests fall into one of three buckets, and the right partner for each is different.
A short, defined project. You need a specific set of reports built, or an existing model rebuilt properly. The work is weeks not months, and once it is done you can take it from there. Look for an independent or small consultancy who will quote a fixed scope and stay out of the way once they have handed over.
Ongoing support and improvement. You have Power BI in production, things keep breaking, the original developer has left, and you need someone to keep the lights on and gradually make it better. Look for a partner that does retainers rather than projects, and is comfortable doing the unglamorous work of fixing other people's models.
A full platform build. You need a data warehouse, a semantic model, governance, a training plan and a roadmap. This is a multi-month engagement and probably involves Microsoft Fabric or Azure. Bigger partners can do it, but so can the right group of two or three senior independents — at a fraction of the cost.
The mistake most teams make is asking a platform-build partner for a small fixed-scope project, then being shocked at the quote.
The five questions worth asking on a first call
Forget the capability decks. Ask these instead.
1. Who will actually do the work? Big consultancies often send senior people to win the work and juniors to deliver it. That is fine for some projects and disastrous for others. Ask for the names and CVs of the consultants who would be hands-on, not the practice lead.
2. Can I see a real model you have built, not a demo? A walkthrough of a live (or anonymised) production model tells you more in fifteen minutes than any sales deck. Look for tidy relationships, named measures, a clear date table, and no thirty-line DAX expressions that nobody could maintain.
3. What will I own at the end? The answer should be "everything" — the .pbix files, the dataflows, the documentation, the DAX. If a consultancy keeps source files on their own tenant or charges extra to hand them over, walk away.
4. How do you handle row-level security and governance? If they hesitate or only talk about workspace permissions, they have not done many serious deployments. The right answer involves RLS, a clear workspace structure, a deployment pipeline (dev / test / prod) and a process for promoting changes.
5. What does support look like after go-live? Projects end. Reports do not. Find out whether the partner will be around to fix something at month-end, and how that is priced.
Red flags worth taking seriously
Some patterns we have seen often enough to flag every time.
Quoting before scoping. Any consultancy that gives you a firm price after a thirty-minute call without seeing a single data source is guessing. Either the price is padded to cover the unknowns, or it is too low and the change requests start in week two.
Heavy reliance on imported data when DirectQuery or DirectLake would fit. It is the easier path for the consultant but often the worse path for you. Ask why the chosen approach is right for your data volumes and refresh needs.
No interest in training your team. A good consultant is trying to make themselves slightly less essential each engagement. One who insists everything must go through them is protecting their revenue, not your interests.
Reseller incentives driving the recommendation. If a Microsoft partner is pushing you onto Fabric Premium capacity on day one without a clear technical reason, ask whether they earn margin on that licence. They almost certainly do.
What does a UK Power BI consultancy cost?
Day rates in 2026 sit roughly in three bands. Independent senior consultants and small specialists run £700–£1,100 per day. Mid-tier consultancies (10–100 staff) run £1,000–£1,500. Big-four and global partners run £1,500–£2,500+. A typical small reporting project costs £8,000–£20,000. A full Power BI semantic model on top of a warehouse, with governance, runs £40,000–£100,000. Anything quoted at "from £3,000" is almost certainly a template-and-go offering rather than genuine consulting.
Cheaper is not always worse — and more expensive is definitely not always better. The single biggest predictor of a good outcome is whether the consultant doing the work has shipped something similar before. Title and firm size are weak signals.
The fit conversation matters more than the credentials
Power BI consultancy is a relationship more than a transaction. You are letting someone shape how your business sees its own numbers. Pick the partner you would happily share a coffee with for the next six months, who will tell you when an idea is wrong, and who is comfortable saying "we do not do that" when you ask for something outside their wheelhouse.
If you want a starting point on what a sensible engagement looks like, our Power BI consultancy page describes how we usually run the first phase, and you can compare that to what others propose.
Frequently asked questions
How much does a Power BI consultancy cost in the UK?
UK day rates range from roughly £700 for independent specialists to £2,500 for the largest firms. A small reporting project typically costs £8,000–£20,000; a full semantic model on a warehouse runs £40,000–£100,000.
What should I look for in a Power BI consultant?
Hands-on experience shipping similar work, a willingness to show real (or anonymised) production models, clarity that you own everything they build, and a sensible answer on row-level security and deployment pipelines.
Do I need a Microsoft Partner?
Partner status is useful for licensing but is a weak signal of consulting quality. Plenty of excellent independents are not partners, and plenty of partners do mediocre work. Judge by the people, not the badge.
Want to talk this through with someone?
We are an independent UK Power BI and Microsoft Fabric consultancy. Honest opinions, fair prices, no sales pressure.