Today’s rail passengers increasingly demand seamless connectivity while traveling. They not only expect to be transported comfortably and securely, but also wish to be informed, entertained and remain productive. This paper covers both the business and technical considerations for delivering Wi-Fi® and 3G/4G cellular services to passengers in a railway system – at stations, and on tracks above and below ground. It describes the business models and financial case, as well as the technical architecture for providing services not only to the stations and platforms, but also on moving trains above and below ground. It offers go-forward considerations for railways operators looking to gain competitive advantage in their public transport service offerings.