Welcome to Prolog, the UK's largest privately owned outsourced services provider Prolog has a cost effective solution for all your mailing needs Prolog Total outsourced service support Please also take a few moments to read our story and see how, through customer focus and service excellence, Prolog has grown from a small storage and distribution company in East Anglia to a national brand that is setting the pace in outsourcing and customer service Our bespoke fulfilment and distribution systems will give you continuous access to stock movements and the progress of orders