London St Pancras International (STP) to London Stansted Airport (STN) train

Greater Anglia is a train company based in the United Kingdom. It operates a wide range of services, from commuter trains to intercity services. The commuter trains run at regular intervals throughout the day, while the intercity services run at peak times. The train types include the InterCity 125, InterCity 225, Class 90, Class 91, Class 360 and Class 379. The ticket types available are Standard, First Class and Advance. Onboard facilities include Wi-Fi, power sockets, air conditioning and refreshment trolleys. The most popular routes for Greater Anglia are London Liverpool Street to Norwich, London Liverpool Street to Cambridge and London Liverpool Street to Ipswich.

Great Northern is a train company based in the United Kingdom. It offers a wide range of services, including high-speed trains, regional trains, and sleeper services. The high-speed trains are called InterCity Express Trains and they offer a fast and comfortable journey between major cities. The regional trains are called Regional Express Trains and they provide a slower but more frequent service to smaller towns and villages. The sleeper services are called Caledonian Sleeper Trains and they offer overnight journeys with comfortable sleeping compartments. Great Northern offers a variety of ticket types, including single, return, and group tickets. Onboard facilities include free Wi-Fi, power sockets, and a selection of snacks and drinks. The most popular routes for Great Northern are London to Cambridge, London to Peterborough, and London to Norwich. These routes offer a convenient and comfortable way to travel between the cities.

Thameslink is a train service that operates in the United Kingdom. It is operated by Govia Thameslink Railway and serves the counties of Bedfordshire, Cambridgeshire, Hertfordshire, London, and Surrey. The trains run from early morning until late at night, with some services running 24 hours a day. There are a variety of train types available, including Class 700 Desiro City, Class 377 Electrostar, Class 387/1 Electrostar, and Class 319/0. Ticket types include Anytime, Off-Peak, Super Off-Peak, and Advance. Onboard facilities include Wi-Fi, power sockets, and air conditioning. The most popular routes for Thameslink are London to Brighton, London to Bedford, and London to Luton.