UK M&A deals of the month: October 2026

October brought another substantial round of UK-linked mergers and acquisitions, with international investors pursuing established British assets while domestic businesses committed capital to specialist capabilities, overseas expansion, and portfolio restructuring.

The month’s agreements spanned pharmacy retail, ports, financial data, business events, and passenger transport. Their commercial motivations differed, but established market positions, customer relationships, and the ability to fund long-term investment repeatedly shaped the terms.

The wider recovery remains uneven. Office for National Statistics figures published in September showed 353 completed UK-involved acquisitions in the second quarter of 2026, down from 407 in the first, although the value of inward acquisitions rose from £15.7bn to £25.4bn. PwC’s half-year analysis found £124.2bn of announced UK M&A value, up 107% year on year, even as deal numbers fell 13%. Almost two-thirds of that value came from the ten largest transactions.

International bidders have been prominent in the public market. White & Case counted 47 firm UK public takeover offers worth £75bn in the first nine months of 2026, with overseas bidders involved in transactions representing 72% of deal volume and 94% of aggregate value. Those public takeover figures cover a narrower market than UK M&A as a whole, but help explain the strength of cross-border interest.

September’s UK M&A analysis examined the agreed takeovers of Bodycote, Spire Healthcare, and Gamma Communications, alongside Softcat’s US expansion. October widened the picture with long-term infrastructure ownership, major international acquisitions by British groups, and a financially pressured transport business moving towards private ownership.

Wittington agrees $8.9bn acquisition of Boots

One of the month’s largest transactions came on 7 October when Canadian investment group Wittington Investments agreed to acquire Boots from Sycamore Partners and the Pessina family for $8.9bn, including assumed debt. Fairfax Financial Holdings is partnering with Wittington, which will have operational control following completion.

The transaction covers Boots’ retail operations in the UK and Ireland, Boots Opticians, No7 Beauty Company, and the business’s Thailand and franchised operations. Sycamore and the Pessina family will retain other interests, including Farmacias Benavides and Alliance Healthcare Deutschland.

Wittington, the Weston family’s investment holding company, brings experience in pharmacy-led retail through its wider ownership interests. Loblaw Companies operates Shoppers Drug Mart in Canada, providing a substantial existing business in pharmacy, health, beauty, and consumer retail.

Boots offers an established retail and healthcare network, recognised consumer brands, and direct relationships with patients and customers. The new investors intend to support store improvements, online services, and the expansion of healthcare provision. Those priorities will require continuing investment in premises, technology, and the workforce as well as the preservation of Boots’ existing customer base.

The proposed acquisition follows Sycamore’s 2025 takeover of Walgreens Boots Alliance and the subsequent separation of its businesses. Completion is expected in the first quarter of 2027, subject to regulatory approvals and customary conditions. For Wittington and Fairfax, the transaction provides an operating platform whose physical reach and pharmacy relationships would take considerable time to build independently.

IFM agrees majority stake in Associated British Ports

Essential infrastructure attracted another major international investment on 21 October. Canadian pension investors CPP Investments and OMERS agreed to sell their combined 63.9% interest in Associated British Ports to a fund managed by IFM Investors.

CPP Investments holds 33.9% and OMERS 30%, stakes acquired in 2015 and 2006 respectively. The financial terms have not been disclosed, so the transaction cannot be ranked directly against October’s publicly priced acquisitions. Completion remains subject to stakeholder review and approval processes.

Associated British Ports operates 19 facilities and handles approximately a quarter of UK seaborne trade. Its ports serve manufacturing, freight, energy, and international supply chains, while supporting more than half of the UK’s offshore wind sector. These are established, capital-intensive assets whose locations, connections, and operating permissions present substantial barriers to new entrants.

IFM manages infrastructure investments for institutional investors, including pension funds. The change in majority ownership therefore shifts control between long-term pools of capital rather than introducing a buyer seeking a rapid operational turnaround. Continued spending on terminal facilities, handling equipment, energy infrastructure, and port connectivity will remain central to the business’s development.

As the UK expands offshore wind capacity and adapts its industrial and energy supply chains, port infrastructure will have to accommodate new equipment, construction activity, and freight patterns. The ABP transaction reflects investment interest in assets positioned to serve those requirements over extended periods.

LSEG pays $3.535bn for credit specialist Octus

British financial markets group LSEG agreed on 22 October to acquire Octus, a US credit intelligence and data business, for $3.535bn in cash. The sellers are funds advised by Permira and Octus’ management, including founder Kent Collier.

Octus provides proprietary information, research, and workflow tools for investment managers, banks, legal advisers, and other participants in credit markets. It has particular expertise in private, illiquid, and distressed credit, where specialist information and established analytical processes support complex financial decisions.

The acquisition extends LSEG’s data and analytics operations beyond its existing strength in liquid fixed-income markets. Combining Octus’ information and customer relationships with LSEG’s distribution, pricing, and analytical products would create a broader offering across public and private credit. Octus expects to generate more than $300m in revenue in 2026, with an adjusted EBITDA margin of approximately 40%.

Financial institutions are also incorporating AI into research and investment workflows. Octus’ proprietary content can be accessed through its own platform and integrated tools, providing LSEG with an established specialist information business rather than a capability that would have to be developed from the beginning.

LSEG intends to finance the acquisition through external debt. It expects the transaction to be neutral to adjusted earnings per share in the first full year following completion and accretive thereafter. Regulatory approval is required, with completion anticipated in the first half of 2027. The purchase demonstrates the willingness of a major UK company to commit substantial capital to information services that complement its existing commercial position.

Informa buys Clarion for £2.24bn

Events and information group Informa agreed to acquire Clarion Events from Blackstone on 6 October at an enterprise value of approximately £2.24bn, while setting out plans to separate its Taylor & Francis academic publishing business.

Clarion operates more than 100 specialist business-to-business events brands across sectors including electronics, defence, security, and gaming. Its addition will expand Informa’s international event portfolio and deepen its presence in markets where industry relationships, established brands, and regular participation underpin commercial activity.

Informa raised approximately £940m through an equity issue to help finance the acquisition, with the remainder funded through dedicated acquisition financing. The company expects the combination to enhance earnings from 2027 and has identified opportunities for cost savings, wider customer reach, and revenue growth. Realising those benefits will depend on how the two event portfolios are integrated.

The proposed separation of Taylor & Francis is a parallel decision about the group’s direction. Academic publishing has been part of Informa since 2004, but management has begun reviewing options to give the business greater independence while concentrating the remaining group on specialist business-to-business markets.

Taken together, the decisions illustrate how portfolio restructuring and acquisitions can reinforce one another. Informa is seeking additional scale in a market where it already operates while preparing to separate an established business with a different operating model. Clarion’s acquisition was expected to complete towards the end of 2026, subject to regulatory approval, and the Taylor & Francis review is due to be updated alongside Informa’s full-year results in March 2027.

Mobico accepts £308m take-private offer

The final major deal highlighted a different set of financial pressures. On 29 October, National Express owner Mobico agreed a recommended acquisition by Leita Mobility, a vehicle indirectly owned by Autobuses de León and backed by the Cosmen family’s CMC Group and Asterion Industrial Partners.

The offer provides 46p in cash for each Mobico share, valuing the company’s equity at approximately £308m. Its implied enterprise value is substantially higher, at around £2.32bn, reflecting debt and other obligations included in the broader measure. The cash price represents a premium of approximately 55% to the closing share price immediately before the offer period began.

The Cosmen family is already a significant Mobico shareholder and has an established relationship with the business dating back to National Express’ acquisition of ALSA in 2005. The latest proposal would transfer the company to a structure involving existing shareholders and infrastructure investment capital.

Mobico operates passenger transport services in several markets but has faced financing pressures and pursued disposals to simplify its activities and strengthen its financial position. Continued investment in vehicles, service delivery, technology, and contract performance will remain necessary under the proposed ownership structure.

The difference between equity and enterprise value is particularly instructive. A business can retain substantial operations and revenues while its debt and financial commitments limit the value available to shareholders. Mobico’s transaction would provide a cash exit at a premium to the recent market price, while transferring responsibility for its longer-term investment and financing needs to its new owners.

What October’s deals reveal about UK M&A

October’s transactions reinforce a market in which substantial capital is available for established assets and well-defined strategic opportunities, without indicating a uniform recovery across all sectors or deal sizes. Overseas investors continued to acquire positions in British businesses, while UK groups pursued acquisitions that extend their capabilities and reach.

Boots and Associated British Ports attracted interest because their established networks and operating positions would be difficult to recreate. LSEG and Informa, meanwhile, are expanding around areas where they already possess commercial strength, adding specialist content, customer access, or events portfolios through acquisition.

Portfolio discipline was also visible beyond the five leading agreements. Tesco agreed to sell its Czech and Slovak businesses to Ahold Delhaize at an enterprise value of €1.7bn, allowing it to concentrate further on the UK and Ireland. Informa’s planned separation of Taylor & Francis similarly reflects a decision to allocate resources around a narrower operating focus.

Specialist technology remained another area of demand. US software company Guidewire agreed to acquire London-based insurance pricing business hyperexponential for a base price of $1.7bn, with up to $400m in additional contingent consideration. Like LSEG’s purchase of Octus, the agreement places substantial value on established tools and specialist expertise used in complex commercial decisions.

Mobico supplied a contrasting example. Its proposed change of ownership is bound up with financing pressures and restructuring rather than simply the pursuit of expansion. The month’s transactions therefore show both sides of the market: strong demand for distinctive assets and continued pressure on businesses whose financial position constrains their choices.

October’s major UK-linked agreements combined long-term investments in established British assets with outward acquisitions and corporate restructuring. The breadth of activity shows how buyers are using M&A to secure operating networks, information, customer access, and specialist capability.

The financial position of each target remains equally important. While buyers are prepared to commit substantial sums to businesses with distinctive advantages, leverage and investment requirements can alter the choices available to management and shareholders. That distinction shaped both the month’s largest strategic transactions and its most prominent financially driven takeover.