Watford Junction (WFJ) to London Euston (EUS) train

West Midlands Trains is a train operator based in the United Kingdom, providing services across the West Midlands region. It operates a variety of train types, including the Class 350 Desiro, Class 323 Electrostar, Class 170 Turbostar, and Class 172 Turbostar. These trains offer a range of onboard facilities, such as free Wi-Fi, power sockets, and air conditioning. Passengers can purchase a range of tickets, including single, return, and season tickets. The most popular routes operated by West Midlands Trains include Birmingham to London Euston, Birmingham to Wolverhampton, and Birmingham to Coventry.

London Overground is a train company based in the United Kingdom. It operates a network of suburban rail services in and around Greater London. The services run from early morning until late at night, with some lines running 24 hours a day. The trains come in a variety of types, including the Class 378 Capitalstar, Class 172 Turbostar, Class 315, Class 317, Class 508 and Class 700 Desiro City. London Overground offers a range of ticket types, including single, return, off-peak and super off-peak tickets. Onboard facilities include air-conditioning, Wi-Fi, power sockets and CCTV. The most popular routes for London Overground are from Euston to Watford Junction, from Liverpool Street to Enfield Town, and from Clapham Junction to Stratford.

Avanti West Coast is a train company based in the United Kingdom. It operates high-speed trains between London and major cities in the UK, including Birmingham, Manchester, Liverpool, Glasgow and Edinburgh. The company offers a range of ticket types, including Standard, First Class and Advance tickets. Onboard facilities include free Wi-Fi, power sockets, comfortable seating and a range of food and drinks. The most popular routes for Avanti West Coast are London to Birmingham, London to Manchester and London to Glasgow. The company operates a fleet of Pendolino and Super Voyager trains, which offer a smooth and comfortable journey.

The Caledonian Sleeper is a train service operating in the United Kingdom. It offers overnight journeys between London, Scotland, the North of England and Wales. The service is operated by Serco and consists of two types of trains: the Classic Sleeper and the Lowland Sleeper. The Classic Sleeper offers comfortable sleeping berths, while the Lowland Sleeper offers reclining seats. Both trains offer onboard facilities such as Wi-Fi, power sockets, and complimentary tea and coffee. Ticket types include Standard, First Class and Solo. Standard tickets offer access to the lounge car, while First Class tickets include access to the lounge car and complimentary breakfast. Solo tickets are available for single travellers and offer access to the lounge car and a private sleeping berth. The most popular routes for the Caledonian Sleeper are London to Edinburgh, Glasgow and Inverness. Passengers can also travel from London to Aberdeen, Fort William and Dundee.