Tesco is moving back into broadband, targeting the UK’s fragmented home‑internet market. The sector is crowded with incumbents BT and Virgin Media O2 and a wave of “altnets” that build fibre, plus MVNOs that resell capacity. With Tesco Mobile losing share, the retailer sees an adjacent revenue stream to test strategically.

Meanwhile, cost‑intensive fibre roll‑outs are squeezing altnet operators, while new rivals such as Elon Musk’s Starlink and Vodafone’s 5G‑home broadband bundles intensify price pressure. In markets like France and Spain bundled mobile‑fixed offers dominate, but the UK still favours separate contracts, leaving room for a retailer‑backed service to capture price‑sensitive households.

Tesco plans to lease wholesale fibre at £15 per month per line and sell broadband for £25. After operating costs and taxes, analysts at New Street Research estimate an EBITDA margin of roughly 10 per cent net, modest against BT’s four‑times‑higher margins but above Tesco’s group average of about 7 %.

For investors, the broadband unit offers a higher‑margin adjunct to Tesco’s low‑growth grocery core, leveraging Clubcard data and in‑store promotion power. While upfront IT and billing investments are required, the venture could lift overall profitability without cannibalising existing sales, making the side hustle a tangible earnings boost.