Microsoft faces potentially tougher regulation in Britain after the Competition and Markets Authority (CMA) proposed designating the technology giant with strategic market status, a move that could lead to restrictions on how it bundles and integrates business software including Excel, Teams and its Copilot artificial intelligence assistant.
The proposal follows an investigation into Microsoft’s extensive presence across the UK business software market, where its products are used by more than one million businesses and public sector organisations, representing approximately 20 million monthly users. The regulator believes Microsoft’s established position and the difficulties customers face when switching suppliers could weaken competition and limit access to alternative technologies.
Under the Digital Markets, Competition and Consumers Act 2024, strategic market status would give the CMA additional powers to introduce targeted requirements intended to improve competition and customer choice. The designation would not establish wrongdoing or automatically impose restrictions, but it could enable intervention where the relevant legal conditions are satisfied.
The investigation covers five areas of Microsoft’s business software operations: personal computer operating systems, productivity software, security products, server operating systems and relational database management systems. The CMA’s provisional findings suggest that Microsoft’s integrated products, commercial arrangements and established customer relationships create advantages that competing software developers may struggle to overcome.
Artificial intelligence has become an important consideration as Microsoft embeds Copilot into its widely used workplace applications. The regulator wants to ensure that businesses can select competing AI services and that independent developers can integrate their products effectively with Microsoft’s software, rather than being disadvantaged by technical restrictions or commercial arrangements.
The potential financial implications extend beyond software pricing. Businesses increasingly depend on integrated digital systems for accounting, communications, cybersecurity and operational management, making changes to established technology providers potentially expensive and disruptive. Greater competition could improve purchasing flexibility, although the eventual effect on costs would depend on any specific measures introduced.
CMA chief executive Sarah Cardell has emphasised the importance of allowing organisations to choose products that meet their requirements, switch suppliers and combine services from different providers. The regulator believes improving competition could encourage innovation and productivity while reducing the risk of businesses becoming excessively dependent on individual technology suppliers.
Microsoft disputes the regulator’s assessment, maintaining that its products are open and interoperable and can operate alongside competing services. The company argues that its approach supports customer choice, while the CMA’s findings remain provisional and subject to consultation.
The announcement also comes alongside continued scrutiny of Microsoft and Amazon Web Services in the UK cloud computing market. Both companies have taken steps to reduce barriers to switching providers and using multiple cloud services, including changes affecting data transfer charges and interoperability. However, the CMA believes further improvements are needed and has retained the option of launching a separate strategic market status investigation into cloud services.
For UK businesses, the outcome could influence future decisions about software procurement, cloud infrastructure and AI adoption. Companies seeking to manage technology expenditure may benefit from greater flexibility when combining products from different suppliers, particularly as artificial intelligence becomes more closely integrated with everyday workplace systems.
The CMA is consulting on its proposed designation until 13 November 2026, with a final decision due by 13 February 2027. Any subsequent conduct requirements or competition interventions would be considered through separate processes, meaning the announcement does not immediately change Microsoft’s pricing, licensing or bundling arrangements.
The decision will be closely watched by software developers, corporate technology buyers and investors as Britain considers how to encourage competition in a market increasingly shaped by integrated platforms and artificial intelligence.