The LCDR's main line started from the Medway Towns and progressed eastwards via Sittingbourne and Faversham, before dividing to Dover via Canterbury and Thanet via Whitstable and Herne Bay.
It soon built extensions to Sevenoaks (Bat & Ball) (1862), Ashford via Maidstone (1862), and a second London terminus (Blackfriars leading on to Holborn Viaduct - 1864–65).
The extensive competition saw the SER build a very expensive deviation via Orpington and Sevenoaks to avoid the lengthy and circuitous route via Redhill, opening in 1868.
Thus towns such as Bromley, Gravesend, Strood, Rochester, Chatham, Sevenoaks, Maidstone, Canterbury, Whitstable, Ramsgate, Margate, Dover and Ashford 'enjoyed' having two stations.
The competition severely strained the resources of both companies, the LCDR given its later start, and the SER with neighbouring LBSCR to the west in Sussex and Surrey.
Co-operation broke out with a joint line between Dover and Deal, but despite a carve up agreement of coastal traffic, competition still persisted leading to Thames terminals being constructed in the middle of the North Kent marshes by both companies (the Hundred of Hoo Railway and the Port Victoria branch).
Only some minor rationalisation was able to occur prior to World War I (the SER's Chatham branch closed, various connecting chords were constructed, etc.).
The 1955 British Transport Commissioners report planned out a major investment programme in the railways and Kent Coast Electrification was one of the 5 key projects.
The signally was upgraded, new rolling stock purchased, platforms significantly lengthen and the track was widened between Bickley Junction and Swanley.
By the 1980s, the Channel Tunnel was being built and a new high-speed link was needed to access St Pancras, but the choice of route was contentious.
The late 1980s saw the organization of the railways change again, first with the "sectorisation" of British Rail with the abolition of the "Southern Region" and introduction of Network SouthEast for passenger services.
Connex encountered financial difficulties but embarked upon the mass replacement of the large obsolete rolling stock fleet.
Kent was the forefront of the development of aviation in the UK with the Royal Aero Club in 1901 at Leysdown on the Isle of Sheppey for balloon flying.
Military Aviation was widespread throughout the county, with the embryonic Royal Air Force at Biggin Hill and the Navy at Manston, near Ramsgate.
Many other air stations sprung up across the county due to its strategic position aside the channel and in the most direct flight path of enemy bombers heading for the capital and other targets (e.g. Chatham Dockyard was bombed in World War I).
With the approach of World War II, Shorts opened a second factory in Belfast as their Kent base was vulnerable to aerial bombardment.
Due to their short runways (Biggin Hill and West Malling), but more generally Post Cold war defence cuts and the populated nature of Kent, the RAF bases were closed in the late 1980s and early 1990s.
After deregulation these were gradually taken over by large transport groups and today operators include Arriva Southern Counties, Metrobus, Nu-Venture, Renown Coaches, Stagecoach in East Kent and Southdown PSV.