About
Tom’s practice covers all aspects of EU and UK competition law, including merger control, foreign investment, antitrust and market reviews.
He has particular experience in complex, cross-border M&A, having worked extensively on the phase I / II merger control aspects of a range of transformational deals before the UK Competition and Markets Authority, European Commission and other regulators as well as challenging foreign investment and national security reviews.
Tom has advised clients across a broad range of sectors, including agrochemicals, air transportation, consumer goods, industrials, media, pharmaceuticals, private equity and telecommunications. He is listed as a Future Leader and Global Elite Thought Leader by Who’s Who Legal and an antitrust MergerLinks Rising Star.
Advising:
- Universal Music on the merger control aspects of its acquisition of Downtown Music recently approved by the European Commission following a Phase II investigation; the acquisition of a minority interest in Chord Music Partners from KKR; the acquisition of a majority interest in Mavin Global Holdings; the acquisition of independent music company PIAS; and in relation to the CMA’s market study on music and streaming.
- A multinational company on the global merger control and national security aspects of its $11.2bn transfer of Wintershall Dea’s exploration and production business to Harbour Energy.
- Linnaeus, part of Mars Veterinary Health, on the multi-year market investigation by the CMA into the UK veterinary services sector.
- Rolls Royce SMR on the global merger control and national security aspects of its partnership with CEZ Group to deploy SMRs in the UK and Czechia.
- A Global Technology Company on the CMA's cloud infrastructure market investigation.
- CVC (and E-Traveli) in relation to the global merger control aspects of its proposed $1.5bn sale to Booking.com, a landmark case in European merger control.
- Parker-Hannifin in relation to the global merger control and foreign investment clearances for its £6.3bn public offer for Meggitt, a manufacturer of aerospace and defence motion and control technologies, including obtaining EU and UK phase I merger clearances subject to competition remedies, with further national security remedies and economic undertakings given to the UK Government.
- Aon in relation to the EU merger control aspects of its $29.9bn merger with Willis Towers Watson, securing clearance at Phase II.
- Rentokil in relation to the UK merger control aspects of its successful acquisition of Cannon Hygiene, securing clearance at Phase II.
- Connect Bidco consortium (Apax, Warburg Pincus, CPPIB and OTPPB) in relation to the global merger control aspects and UK Government approval, subject to national security undertakings, of its £2.6bn acquisition of Inmarsat.
- Deloitte in relation to the CMA’s market study on statutory audit.
- A chemicals company in relation to the global merger control aspects of its €7.6bn acquisition of significant components of Bayer’s seed and crop protection businesses and related assets, which Bayer divested ahead of its planned acquisition of Monsanto.
- Johnson & Johnson in relation to the global merger control aspects of its $30bn acquisition of Actelion.
- BG Group in relation to the global merger control aspects of its €65bn acquisition by a multinational oil and gas company.
- Holcim in relation to the EU merger control aspects of its $43bn merger of equals with Lafarge.


Thomas McGrath
100 Bishopsgate
London EC2P 2SR
Bastion Tower
Place du Champ de Mars/Marsveldplein 5
Brüssel B-1050