Govia Thameslink Railway in the context of "Brighton Main Line"

King's Cross railway station, also known as London King's Cross, is a passenger railway terminus in the London Borough of Camden, on the edge of Central London. It is in the London station group, one of the busiest stations in the United Kingdom and the southern terminus of the East Coast Main Line to Yorkshire and the Humber, North East England and Scotland. Adjacent to King's Cross station is St Pancras International, the London terminus for Eurostar services to continental Europe. Beneath both main line stations is King's Cross St Pancras tube station on the London Underground; combined, they form one of the country's largest and busiest transport hubs.

The station was opened in King's Cross in 1852 by the Great Northern Railway on the northern edge of Central London to accommodate the East Coast Main Line. It quickly grew to cater to suburban lines and was expanded several times in the 19th century. As part of the Big Four grouping in 1923, it came under the ownership of the London and North Eastern Railway, who introduced famous services such as the Flying Scotsman and locomotives such as Mallard. The station complex was redeveloped in the 1970s, simplifying the layout and providing electric suburban services, and it became a major terminus for the high-speed InterCity 125. As of 2018, long-distance trains from King's Cross are run by London North Eastern Railway to Edinburgh Waverley, Leeds and Newcastle; other long-distance operators include Hull Trains and Grand Central. In addition, Great Northern runs suburban commuter trains around North London, Hertfordshire, Cambridgeshire and Norfolk.

The Cambridge line is a railway line in the East of England; it connects the East Coast Main Line at Hitchin to the West Anglia Main Line at Cambridge. The line is owned by Network Rail and is 23 miles 15 chains (23.19 miles, 37.32 km) in length, serving nine stations. Train services are operated by Thameslink and Great Northern.

Originally opened in 1851, the Royston and Hitchin Railway built a route between Hitchin and Shepreth. There, it met the Shepreth Branch Railway, and the two were joined in 1862 to form the modern route. A station at Letchworth was added in 1905 in conjunction with its opening as the world's first garden city. However, the line fell into decline throughout the mid 1900s, and Harston station was closed as part of the Beeching Axe in 1963.

Wimbledon is an interchange station in the centre of Wimbledon for London Underground, London Trams and National Rail services, and is the only station in London that provides an interchange between the London Underground and Tramlink.

It serves as a junction for services from the Underground's District line, two National Rail operators (South Western Railway and Thameslink), and Tramlink services. The station is in London fare zone 3. It is 7 miles 19 chains (11.6 km) from London Waterloo on the South West Main Line.

Abbey Wood is a major National Rail and Elizabeth line interchange station in Abbey Wood, south-east London, England. It lies between Plumstead and Belvedere on the North Kent Line, 11 miles 43 chains (18.6 km) from London Charing Cross. Services run via the Greenwich and Lewisham routes into central London, while Elizabeth line services operate to Paddington, Heathrow Airport and Reading via Canary Wharf and Liverpool Street. It is in London fare zone 4

The station is managed by Transport for London and served by Southeastern, Thameslink and the Elizabeth line. It is the nearest station to Thamesmead, linked by local bus services. The station entrance is located within the London Borough of Bexley, while the platforms are in the Royal Borough of Greenwich.