Telecom Plus, which trades as Utility Warehouse, has unveiled a five-year strategy aimed at more than doubling its multi-service customer base to over one million by FY31, supported by a significant investment programme that has spooked shareholders.

The company, best known as the UK’s only multi-utility service provider, bundling energy, broadband, mobile and insurance into a single monthly bill, plans to invest around £55m annually through the profit and loss account to achieve its target