Whistl UK Ltd
Transportation, Logistics, Supply Chain and StorageEngland, United Kingdom501-1000 Employees
Whistl UK Ltd, based in Marlow, England, operates in the transportation, logistics, supply chain and storage sector. It provides outsourced fulfilment and contact centre services for brands and retailers, including tailored pick-and-pack, storage, returns, and an omnichannel service team that represents the brand. The company manages parcel delivery for UK and international shipments, helping streamline shipping and improve customer satisfaction. It is the UK's largest Downstream Access provider for bulk business mail, processing more than half of such mail. Whistl also operates related units including Posthub, Leafletdrop, Relish, and Ethical Superstore, and in mid-2026 announced a £3.5 million investment to expand its delivery van fleet in partnership with Grosvenor Leasing.