London Stansted Airport (STN) to Swansea train

Great Western Railway is a train operating company in the United Kingdom. It operates services from London Paddington to the West of England, South Wales and the Cotswolds. It also operates services from London Paddington to Oxford, Reading and Bristol. It offers a range of ticket types, including Advance, Anytime, Off-Peak and Super Off-Peak tickets. Onboard facilities include free Wi-Fi, power sockets, air conditioning and catering services. The most popular routes for Great Western Railway are London Paddington to Bristol, Reading and Oxford.

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.