UK and Europe: AI Roll-Ups Outside the US

Part 12 of The Founder's Guide to AI-Enabled Roll-Ups

If you own a services firm in Britain or Europe, the buyers this guide describes are already in your market. Some of the American money from the earlier chapters is here too. And on the rules that decide who may own a professional firm, the UK has been more open than the US for more than a decade.

This year showed both sides. A UK lettings roll-up raised $170m to keep buying agencies. Two of Britain's biggest accountancy consolidators tried to sell for around £1bn, and both paused.

Who is buying in the UK and Europe?

The cleanest example is Dwelly. Founded in 2023 by former Uber and Gett executives, it buys independent letting agencies and runs them on its own AI platform, which handles tenant finding, property management and rent collection. The agencies keep their local brand and staff.

In July it raised a $170m Series B: $95m of equity led by EQT Growth with General Catalyst, plus a $75m debt facility led by Trinity Capital. By late October, it said it had made 13 acquisitions in 2026 alone, including some lettings portfolios rather than whole agencies, and managed more than 16,000 properties.

General Catalyst backs Long Lake, Crescendo, and Titan, the American platforms earlier in this guide. Companies House records it as holding between 25% and 50% of Dwelly's operating company.

The results so far are the company's own and its backers'. In August 2025, General Catalyst said EBITDA margins had doubled at agencies where the technology was fully deployed. Dwelly says that in August 2026, the average human time on a maintenance job was 15-20 minutes, against an estimated three hours by hand. Neither figure is audited, and Dwelly has not announced its revenue.

Dwelly's own targets are worth watching. In February, it told Fortune it aimed to manage 50,000 properties by the end of 2026. In October, it passed 16,000.

The rules have also moved under it. Since 1 May, England's Renters' Rights Act has abolished no-fault evictions and limited rent rises to once a year. Dwelly's own summary of the market, reported by Landlord Today, was blunt: "Landlords are leaving. Regulation is increasing."

Dwelly has plenty of company. Tenet, a Berlin investor in the space, runs a directory called the AI Roll-up Nexus. By my count, 27 of its listings in the sectors this guide covers are in the UK, 62 are elsewhere in Europe, and 86 are in the US.

Tenet's coverage may lean European, and the list mixes funded platforms with companies still in stealth. Read it as a map of the idea.

Germany shows the model spreading. Limetax buys profitable local tax firms, lets them keep their brands and runs them on AI built on DATEV, the software most German accountants already use. In September, it raised €6m of equity and a €30m credit line from German banks. In June, Hamburg's Generation Tech Partners raised more than €50m to buy around 30 owner-managed service firms facing succession.

American platforms are crossing too. Crescendo, the AI customer-service business, expanded into the UK and Europe from London in April 2026 and named British customers including Dr Martens.

What 2026 did to the UK accountancy roll-ups

Accountancy is where Britain has the longest record. In the decade to April 2025, UK firms accounted for more than 40% of Europe's private equity-backed accountancy deals.

Sumer shows the pace. Warren Mead, a former chief operating officer of KPMG UK, set it up in 2022 with two former KPMG colleagues and backing from Penta Capital. By September 2025, it had completed 34 acquisitions and was exploring a sale at about £1bn.

Then the top of the market stalled. In February 2026, Xeinadin, an accountancy group partially owned by Exponent, paused its auction when bids fell short of the more than £1bn it sought. In May, Penta reportedly paused Sumer's sale and was weighing a continuation vehicle instead.

A continuation vehicle lets a private equity firm move a company from an old fund into a new one, with fresh investors buying in and the old fund's investors able to cash out.

In October, reports said TPG would lead one for Sumer at a valuation above £1bn. None of the firms involved has confirmed it.

Both are traditional consolidators. They matter here because they are the market an AI roll-up will one day sell into, and this year that market pushed back on price. "The era of the 'easy' roll-up valuation is over," Accountancy Age wrote in February.

Below the top, the deals kept coming:

• AAB, majority-owned by Goldman Sachs Alternatives, combined with Kreston Reeves in February to form a group with more than £200m of annual revenue.
• RedBird-backed Affinia bought Wilson Partners in August.
• ECI Partners invested in Shaw Gibbs in September as Apiary Capital sold out.

The bigger platforms have been changing owners for a while. Cooper Parry moved from Waterland to Lee Equity at the end of 2024, and PAI Partners joined Hg as co-owner of Azets in 2023.

Accountancy Europe, which tracks these deals, sees no clear signs of a broad slowdown. It counted 385 private equity deals across Europe in 2025. The UK made up 24% of them, down from more than 40% over the previous decade, while Norway recorded 78 and Sweden 53. In the first four months of 2026, the UK's share was back to nearly a third.

Waterland, a Dutch investor, is the model there. Accountancy Europe's 2025 study lists its investments in accountancy firms in the UK, France, Belgium and the Netherlands.

Why UK ownership rules suit roll-ups

On the question of who may own a professional firm, Britain has been more open than the US for years. The law industry shows it most clearly.

In most of the US, non-lawyers still cannot own law firms. Arizona has approved around 150 applications for firms with outside owners, and Utah's trial is closed to new applicants and ends in August 2027. Elsewhere, legal roll-ups rely on workarounds, such as a management company alongside a lawyer-owned practice.

England and Wales settled this years ago. Under the Legal Services Act 2007, firms licensed as alternative business structures can be owned by non-lawyers, and the first licences came in 2011 and 2012. Any non-lawyer taking 10% or more of one, or significant influence over it, needs the regulator's approval first.

The regulator has let AI in as well. In May 2025, the Solicitors Regulation Authority authorised Garfield.Law, the first AI-driven law firm in England and Wales. Its conditions: the client approves each step, and named solicitors stay accountable for the firm's work. In August 2026, the government's Advisory AI Growth Lab opened to legal services as its first sector.

Capital has followed the structure. Acquira, a merger adviser with an interest in the trend, counts £534m of private equity going into UK law firms in 2024 and £250m in 2025. In its 2026 count, 15 private equity-backed legal deals had completed so far that year, against 12 in each of the two years before.

Accountancy has no general bar on outside owners, so Sumer and Azets could raise private equity and consolidate quickly. Audit is the exception. UK and EU law requires audit firms to remain majority-controlled by qualified auditors, and UK and Dutch regulators have asked firms to consult them before any private equity deal.

The vet market shows what a UK regulator does when a services market consolidates. The Competition and Markets Authority found that six large groups owned about 60% of practices, up from 10% in 2013, and that some kept the local name after buying a practice.

When the final report came out in March 2026, the inquiry's chair, Martin Coleman, said: "People are left in the dark about who owns their practice". The remedies were set in an Order in September, and the first apply from 23 December. They are price lists, capped prescription fees, written estimates for treatment of £500 or more and a duty to say whether a practice belongs to a group.

For any roll-up that keeps local brands, that last duty is worth noting.

How UK and EU rules on AI differ

On AI itself, the picture flips. The UK has no AI Act. The government's programme for the year, set out in the King's Speech on 13 May 2026, contained 27 bills and none on AI.

The last full statement of its approach, in February 2024, left AI to existing regulators applying five cross-sector principles. It promised to legislate "when we are confident that it is the right thing to do". The department that wrote it is itself being replaced.

The EU went the other way. The AI Act has been in force since August 2024. Its bans have applied since February 2025, its general-purpose AI rules since August 2025, and most of the rest, with enforcement, since 2 August 2026.

For a services roll-up, the high-risk rules matter most. AI used to screen job applications, evaluate candidates or score people's credit is high-risk, which brings duties on risk management, data quality, record-keeping and human oversight. A platform that automates hiring decisions for its clients sits squarely in the middle.

The timing is now settled. The Digital Omnibus on AI, Regulation (EU) 2026/1744, was adopted in June 2026 and came into force on 27 July. It moved the high-risk rules for systems such as hiring tools to 2 December 2027, and for AI built into regulated products to 2 August 2028.

The fines are tiered. Banned practices carry up to 7% of worldwide turnover or €35m, whichever is higher. Most other breaches, including high-risk duties, carry up to 3% or €15m. Smaller companies pay the lower figure.

Neither is simply better. Lighter AI rules cost less to meet today and leave more room for change. Fixed EU rules cost more to meet and give a builder a target that will hold.

To my eye, the UK's real edge is ownership. More than a decade of open structures has produced buyers, lenders and advisers who know how to do these deals.

Reading it from this side of the Atlantic

If you might sell, the condition that gives a seller bargaining power holds here: more than one credible buyer. They include AI platforms backed by American money, such as Dwelly, and private equity consolidators with new owners. I'd expect the platforms whose own sales stalled this year to be stricter about what they pay.

The questions from the US chapters still apply: what AI is running today, what happens to your team and brand, how the deal is funded, and which founders you can call.

Two UK checks take little time. The first is tax: Business Asset Disposal Relief will tax qualifying gains at 18% from 6 April 2026, up from 10% before April 2025 and 14% in the interim.

It applies only if you meet conditions, such as holding at least 5% of the shares for two years. It is worth raising with a tax adviser before heads of terms are signed.

The second is the buyer. Companies House is free and shows who controls a UK company, which lenders hold a charge over it and when it last filed accounts.

For Dwelly's operating company, it shows General Catalyst's stake and a charge in favour of Trinity Capital. Half an hour there before the first meeting tells you who you are dealing with.

If you might invest, the UK offers what the US is still building towards: law firms you can own directly and an accountancy market with a long buy-and-build record. The lesson of 2026 is about exits. Both big early platforms that tested a sale this year paused.

A continuation vehicle gives investors cash, but the manager sits on both sides of the deal, so these deals lean on an outside lead investor to set the price.

The platforms worth a closer look can show deployed AI results and a working integration process. A target pipeline is the easy part.

If you might build, the rules shape the design. The UK gives you open ownership and, for now, a light AI rulebook. The EU's high-risk duties take effect from December 2027 on exactly the tools a services platform is most tempted to automate, including hiring screens and credit decisions.

Where you incorporate, which functions you let AI touch, and which market you enter first all follow from that. The vets case adds one more decision: if you keep local brands, settle early on how you will tell clients who owns them.

The model has crossed the Atlantic, and the American money came with it. What 2026 added is the first test of a £1bn exit in UK accountancy. The results were mixed at best, which helps anyone deciding now: the platforms you meet next will have seen it happen.

Previous: When Roll-Ups Break

Next: Decision Framework for Professional Services

Playbook Hub: The Founder's Guide to AI-Enabled Roll-Ups