Editing Thameslink (section)

==Route==
Much of the original route is over the [[Brighton Main Line]] (via London Bridge) and the southern part of the [[Midland Main Line]], plus a suburban true loop (circuit) serving Sutton. A branch via the [[Catford Loop Line]] to Sevenoaks was added in 2012. Sections to [[Peterborough]] on the [[East Coast Main Line]], [[Cambridge]] via the [[Cambridge Line]], [[Horsham]] on the [[Arun Valley line]] and [[Rainham, Kent|Rainham]] via [[Greenwich, London|Greenwich]] were added in 2018. [[East Grinstead]] is also served during peak hours.

The route through central London (today known as Thameslink core) is via [[St Pancras railway station#Thameslink service|St Pancras International]] for connections to [[Eurostar]] and the East Midlands; {{stn|Farringdon}}, for [[London Underground]] [[Circle line (London Underground)|Circle]], [[Metropolitan line|Metropolitan]] and [[Hammersmith & City line|Hammersmith & City]] lines, and the [[Elizabeth line]]; {{rws|City Thameslink}}, which replaced the demolished [[Holborn Viaduct railway station|Holborn Viaduct station]] and has a southern entrance serving Ludgate Circus; {{stn|Blackfriars}}, for main-line rail services and the Underground [[District line|District]] and Circle lines; and {{stn|London Bridge}} for main-line links into Kent and Sussex and the Underground [[Northern line|Northern]] and [[Jubilee line|Jubilee]] lines. {{rws|King's Cross Thameslink}} on [[Pentonville Road]] closed on 8 December 2007.

Trains operating the "main line" service (Bedford and Cambridge to Brighton, Peterborough to Horsham) include first-class accommodation; those operating from Luton, St Albans and Kentish Town to Sutton, Sevenoaks and Orpington are usually standard class only. When [[Govia]] operated the [[Thameslink (train operating company, 1997–2006)|original Thameslink franchise]] these services were designated "Thameslink CityFlier" and "Thameslink CityMetro" respectively, but [[First Capital Connect]] dropped this branding. [[Govia Thameslink Railway]] now refers to these services as Route TL1 (formerly Route 6) and Route TL2/TL3 (formerly Route 7/8) respectively.