Although I don't really like the Thomas and Friends series anymore as a whole, due to being grown up, I still have happy memories of when I was still into the series. And I still like the engine prototypes the characters are based on.
But anyway, here's a list of some of the engine characters from Thomas and Friends, their basis's, when they were built, and how fast they have been reported to go. Enjoy! :D
List of Engines and their Top Speeds
Character:  Class:  Built:  Configuration:  Top Speed: 

Edward  FR K2 "Larger Seagull"  1896  440  70 miles per hour 
Gordon  GNR A1 Pacific  1922, rebuilt 1939  462  100 miles per hour 
Henry  circa. 1919, rebuilt 1935  460, originally 462  90 miles per hour (rebuild)  
George Hughes^{[1]}  L&YR Class 28  19121913  260, originally 060  70 miles per hour 
Thomas  LB&SCR E2  1915, rebuilt 1960  060T  3050 miles per hour^{[2]} 
James  L&YR Class 28  19121913  260, originally 060  70 miles per hour 
Percy  Avonside 040ST, with Hunslet underframes and valve gear, a smokebox protruding from his saddletank, external cylinders and motion, and sandboxes underneath the tanks on his footplate
 circa. 1900^{[3]}  040ST  40 miles per hour 
Toby  GER C53/LNER J70  June 1914  060T  20 miles per hour 
Sir Handel  Hughes Falcon 042ST  1904^{[4]}  042ST, originally 040ST  
Peter Sam  Kerr Stuart Tattoo  1920^{[5]}  042ST  
Duck  GWR 57xx, originally GWR 64xx  March 1929  060PT  45 miles per hour 
Big City Engine  LMS Patriot  May 1934  460  
City of Truro  GWR 37xx "City"  April 1903  440  100 miles per hour / 160 kilometres per hour 
Devious Diesel  BR Class 08  1952  060DE  20 miles per hour / 32 kilometres per hour 
Donald  CR 812  1909  060  55 miles per hour 
Douglas  CR 812  1909  060  55 miles per hour 
Daisy  BR Class 101  1960  BoBo  75 miles per hour 
Stepney  LB&SCR A1X "Terrier"  1875, rebuilt 1912  060T  60 miles per hour 
Adams  LSWR 415  1885  442T  45 miles per hour 
D261  BR Class 40  1960  1Co+Co1  90 miles per hour / 140 kilometres per hour 
Culdee  Snowdon 042RT  1900^{[6]}  042RT  5 miles per hour / 8 kilometres per hour^{[7]} 
Neil  Neilson 040 Box Tank  1856  040BT  
Bill  Bagnall 040ST  1948  040ST  1520 miles per hour^{[8]} 
Ben  Bagnall 040ST  1948  040ST  1520 miles per hour^{[8]} 
BoCo  BR Class 28  October 1958  CoBo  75 miles per hour / 121 kilometres per hour 
Flying Scotsman  LNER A3 Pacific, originally LNER A1 Pacific  February 1923, rebuilt 1947  462  100 miles per hour 
D199  BR Class 46 "Peak"  1963  1Co+Co1  90 miles per hour / 145 kilometres per hour 
D7101  BR Class 35 "Hymek"  1964  BoBo  90 miles per hour / 145 kilometres per hour 
Oliver  GWR 14xx  August 1934  042T  80 miles per hour 
Duke  Festiniog Railway 040TT "Small England"  circa. 1879^{[9]}  040ST+T  35 miles per hour 
Mavis  BR Class 04  1962  060DM  27 miles per hour / 43 kilometres per hour 
Old StuckUp  BR Class 40  December 1960  1Co+Co1  90 miles per hour / 140 kilometres per hour 
Frank  Perkins 044  circa. 1967^{[10]}  044  
Wilbert  Hunslet Austerity  1953  060ST  35 miles per hour / 56 kilometres per hour 
Sixteen  Hunslet Austerity  circa. 1943  060ST  35 miles per hour / 56 kilometres per hour 
Ivo Hugh  Andrew Barclay 042T  1996^{[11]}  042T  
Derek  BR Class 17  Between 1962 and 1965  BoBo  60 miles per hour / 97 kilometres per hour 
Iron 'Arry  BR Class 08  Between 1952 and 1962  060DE  20 miles per hour / 32 kilometres per hour 
Iron Bert  BR Class 08  Between 1952 and 1962  060DE  20 miles per hour / 32 kilometres per hour 
Bertram  Festiniog Railway 040TT "Small England"  circa. 1879^{[12]}  040ST+T  35 miles per hour 
Diesel 10  BR Class 42 "Warship"  Between 1958 and 1961  BoBo  90 miles per hour / 145 kilometres per hour 
Lady  040T  
Splatter  BR Class 08  Between 1952 and 1962  060DE  20 miles per hour / 32 kilometres per hour 
Dodge  BR Class 08  Between 1952 and 1962  060DE  20 miles per hour / 32 kilometres per hour 
Salty  BR Class 07  1962  060  27.5 miles per hour / 44.3 kilometres per hour 
Harvey  Dübs Crane Engine  circa. 1901  040CT  
Emily  GNR G3 Stirling Single  1894 or 1895  422  85 miles per hour 
Fergus  Aveling & Porter TJ  1926  220WT  8 miles per hour 
Arthur  LMS Ivatt Class 2MT Tank  1946 or 1947  262T  
Murdoch  BR Standard 9F  Between January 1954 and February 1960  2100  90 miles per hour 
Spencer  LNER A4 Pacific  Between 1935 and 1938  462  126.4 miles per hour / 203.4 kilometres per hour 
Molly  GER D56/LNER D15 "Claud Hamilton"  Between 1903 and 1911  440  90 miles per hour 
Elliot^{[13]}  LB&SCR E2, with giesl funnel and belpaire firebox  June 1913, rebuilt circa. 2005  060T  90 miles per hour (rebuild), originally 3050 miles per hour^{[14]}

Mighty  FR Double Fairlie  After 1879  0440T  50 miles per hour 
Mac  FR Double Fairlie  After 1879  0440T  50 miles per hour 
Neville  SR Bulleid Q1  September 1942  060  60 miles per hour 
Dennis  BR Ashford Works  1949  060DM  43.5 miles per hour 
Fearless Freddie  Russell 262T  1906  262T  
Rosie  SR USA  1942 or 1943  060T  35 miles per hour 
Gallery
References:
 ↑ This is just a fanmade name for The Second Red Engine which I gave him since it's the name of his designer. He does not have an actual name, nor has it been confirmed whether he even has a gender.
 ↑ The maximum speed that Thomas is able to go is debatable, as some sources say that his basis can reach a maximum of 3040 miles an hour, while other sources say that it can reach a maximum of 4050 miles an hour.
 ↑ It is implied that Percy was built in 1900 at the latest. However his real life basis was originally built in 1897.
 ↑ It is implied that Sir Handel was built in 1904. However his real life basis was originally built in 1878.
 ↑ It is implied that Peter Sam was built in 1920. However his real life basis wasn't built until 1921.
 ↑ It is implied that Culdee was built around 1900. However his real life basis was originally built in 1896.
 ↑ This is the average speed that Culdee's basis is known to travel at. This may not reflect his actual top speed. There is some support that his basis can reach 15 miles an hour.
 ↑ ^{8.0} ^{8.1} The maximum speed that the Bagnall 040ST class is able to go is uncertain. Though it is presumed that the locomotive would at least have been able to reach 1520 miles per hour.
 ↑ It is implied that Duke was built in 1879 at the latest. However his real life basis was originally built in 1864. Both Skarloey and Rheneas are implied to be older than Duke, though Rheneas' basis is younger than Duke's.
 ↑ The Railway Series book Jock the New Engine implies that Frank was built around 1967. However his real life basis was originally built in 1929, and rebuilt in 1931 and 1984. Frank is based on the 1931 rebuilt version of this basis.
 ↑ The Railway Series book New Little Engine implies that Ivo Hugh was built in 1996. However his real life basis was originally built in 1949, and rebuilt in 1991. Ivo Hugh is based on the rebuilt version of this basis.
 ↑ It is implied that Bertram was built in 1879 at the latest. However his real life basis was originally built in 1864. Both Skarloey and Rheneas are implied to be older than Bertram, though Rheneas' basis is younger than Bertram's.
 ↑ This is just a fanmade character which I created sometime during Term 3 2005, probably sometime in September if I remember correctly. Elliot isn't actually a canon Thomas character.
 ↑ The maximum speed that the LB&SCR E2 class is able to go is debatable, as some sources say that it can reach a maximum of 3040 miles an hour, while other sources say that it can reach a maximum of 4050 miles an hour.