French billionaire Xavier Niel spent £4.4bn to acquire Emirati telecom group e&'s 16.2 per cent stake in Vodafone, sending shares up 12 per cent. Investors expect Niel, whose discount provider Iliad disrupted France, to drive cost-cutting and boost margins.

Niel is the third tycoon to invest in UK telecoms in two years. India's Sunil Bharti Mittal paid £3.2bn for a 24.5 per cent stake in BT in 2024, after Carlos Slim took a 3 per cent stake. Both Vodafone CEO Margherita Della Valle and BT CEO Allison Kirkby now face pressure from industry heavyweights as they pursue overhauls.

Analysts expect Niel to push for aggressive cost reductions, citing his track record at Millicom (30 per cent workforce cuts) and Tele2 (15 per cent cuts). Vodafone, employing 91,000 people, already plans to cut 11,000 jobs by 2026. Niel believes Della Valle has improved Vodafone but more can be done on brand and global reach.

Niel must clear regulatory and UK national security reviews, which could take a year. His stake in Irish rival Eir may concern EU regulators. If cleared, he may seek a board seat, casting a long shadow over Vodafone's headquarters, similar to Mittal's influence at BT.