EU and UK competition regulators signal new openness to defence sector consolidation as Europe's €800 billion rearmament drive reshapes merger control

A fundamental shift in European competition policy is under way, driven by mounting geopolitical pressure and the EU's Defence Readiness 2030 strategy, which aims to mobilise up to €800 billion in defence investment by 2030. The European Commission (EC) has confirmed in its Defence Readiness Omnibus that merger assessments will now give explicit weight to the changed security environment, with the revised Draft Guidelines (issued April 2026) recognising resilience and strategic autonomy as potential merger efficiencies. In practice, transactions that might previously have raised concerns due to high market shares or vertical integration may be assessed more favourably where they enhance EU defence readiness or reduce supply-chain exposure. The Draft Guidelines also introduce an 'innovation shield' providing thresholds under which the EC will in principle find no competition concerns, likely benefiting defence acquirers targeting start-ups with unique technologies. Final revised guidance is expected by end of 2026. The Leonardo/Iveco transaction, a €1.7 billion acquisition of Iveco's defence vehicles division, received unconditional EC clearance in March 2026 as an early demonstration of this approach. In the UK, the Competition and Markets Authority (CMA) is moving in the same direction. The government's £298 billion Defence Investment Plan (published June 2026) was accompanied by a 'strategic steer' to the CMA to prioritise growth in critical sectors, and the CMA's June 2026 draft guidance on merger efficiencies now expressly recognises that mergers combining complementary R&D capabilities can produce dynamic efficiencies over longer time horizons. CMA Chief Executive confirmed the authority is assisting the Ministry of Defence in identifying potentially anticompetitive regulations in autonomous weapons markets. FDI (foreign direct investment) scrutiny is intensifying in parallel: the Dutch government blocked a US acquirer's proposed purchase of digital ID provider Solvinity, while the UK attached conditions to Australian Pen10's acquisition of cybersecurity firm , signalling that allied-country investors now face meaningful mitigation requirements in sensitive sectors.