This is a timeline chronicling the events of the Railway Series, TV Series and the railways:
1806
- Plateway from Ward Fell to Balladswail built.
1853
- The Sodor and Mainland Railway is built.
1864
- Skarloey is built.
1865
- Skarloey arrives on Sodor.
- Rheneas is built and arrives on Sodor.
- Skarloey has added trailing wheels to improve stability, and has a cab installed.
1870
- The Wellsworth-Suddery Railway is opened.
- Albert is built.
1875
- Stepney is built.
1877
- Captain Baxter is built.
1879
- Duke is built.
1880
- The Mid Sodor Railway is opened.
- Victoria is built.
- Boxhill is built.
- Cromford is built.
1883
1888
- Sir Topham Hatt I is born.
- Albert is rebuilt into a J1 2-4-2 class.
1896
- Edward is built.
- Godred is built.
- Ernest is built.
- Wilfred is built.
- Culdee is built.
- Shane Dooiney is built and arrives on Sodor.
1897
- Construction on the Culdee Fell Railway begins.
- Wilfred arrives on Sodor.
1898
1899
- Donald and Douglas are built.
1900
- The Culdee Fell Railway is opened.
- Godred dies in a fall.
1903
- Toby is built.
- Falcon is built.
- City of Truro is built.
1905
- Boxhill is rebuilt into a 2-4-0T.
1910
- Bluebell and Primrose are built.
1913
1914
- The North Western Railway is formed from the Sodor and Mainland, the Tidmouth, Knapford and Elsbridge Light, the Wellsworth-Suddery and the Crosby-Brendam railways.
1915
- Thomas arrives on Sodor.
- James is built.
- The Ballahoo tunnel is built.
- The workshops at Crovan's Gate are established.
1916
- Tidmouth-Arlesburgh branch built.
1917
- Stanley is built.
1918
- Duncan is built.
1919
- Addams is built.
1920
1922
- Gordon is built and arrives on Sodor.
- Henry is pre-rebuilt into a LNER Class A3 with a six-wheeled tender and arrives on Sodor.
- A second bore is cut for the Ballahoo tunnel after Henry stops in the original.
- Lord Harry is built.
1923
- Victoria arrives on Sodor and is made into a summerhouse at an Elsbridge orchard.
- Alaric is built.
- Eric is built.
- Stuart is built.
1929
- Duck is built.
1932
- Oliver is built.
1940
- Rusty is built.
1946
1947
- The Mid Sodor Railway and the Tidmouth-Arlesburgh branch are closed.
- Duke is sheeted.
- Falcon and Stuart are purchased by the aluminium works at Peel Godred for an expansion project.
1948
- The North Western Railway becomes officially known as the "North Western Region of British Railways".
1949
1950
- Henry is overhauled.
- Rheneas is overhauled.
- Falcon and Stuart are sheeted.
- Henry has a collision with a goods train and is sent to Crewe to be rebuilt into a LMS Stanier Class 5.
- Fred is built.
1951
- Toby arrives on Sodor.
- Thomas has a brush with the law after he is booked for travelling from the Anopha Quarry line without cowcatchers or side plates.
- Stuart and Falcon are purchased by the Skarloey Railway and renamed Peter Sam and Sir Handel respectively.
1952
- Mavis is built.
1953
- Bill and Ben are built.
- Diesel is built.
1955
1956
- Sir Topham Hatt I dies.
- Daisy is built.
1957
1958
1959
- Donald and Douglas arrive on Sodor.
1960
- 199 is built.
- The Diesel is built.
- Old Stuck-Up is built.
- Stepney is rescued by Rusty and arrives on Bluebell Railway.
- Captain Baxter arrives at Bluebell Railway.
1961
- Thomas has a collision with the Ffarquhar stationmaster's house and is sent to be repaired.
- Daisy arrives on Sodor.
- 7101 is built.
1962
- Mavis arrives on Sodor.
- Rheneas returns to Skarloey Railway.
1964
- Tidmouth-Arlesburgh branch re-opened.
- Culdee returns to Culdee Fell Railway.
- Lord Harry arrives on Sodor.
- Alaric arrives on Sodor.
- Eric arrives on Sodor.
- Lord Harry is renamed "Patrick".
1966
- Bill and Ben arrive on Sodor.
1967
1968
- Oliver, Isabel and Toad are rescued by Douglas and arrive on Sodor.
- Merlin, Mike and Rex arrive on Sodor.
- Merlin is renamed "Bert".
- Bert is rebuilt with a new boiler, long frames, a cab, a six-wheel tender, a cab and two new wheels, making his wheel arrangement 0-8-2.
1969
- Duke is discovered by Mr. Fergus Duncan, the Reverend W. Awdry and the Reverend Teddy Boston.
1984
- Duke is fully restored.
- Sir Handel visits the Talyllyn Railway.
1987
1990
- After Privitisation, the name "North Western Railway" becomes official.
- Thomas is invited to a railway show in York.
1995
- The Golden Jubilee of the Railway Series is celebrated.
- Pip and Emma are purchased by the North Western Railway.
1996
- Ivo Hugh is built.
1999
- Cromford is loaned to Barrow Hill Engine Sheds.
2006
- Victoria is returned to service.
2008
- Cromford returns to Bluebell Railway.