Rail transport in Great Britain
High-speed rolling stock

Name
Locomotive class
Type
Max. recorded speed (mph (km/h))
Max. design speed (mph (km/h))
Max. speed in service (mph (km/h))
Eurostar, e320
374
EMU
219 (352)
200 (320)
N/A
Eurostar, e300
373
EMU
209 (334.7)
186 (300)
186 (300)
Javelin
395
EMU
157 (252)
140 (225)
140 (225)
InterCity 225
91
Electric Loco
162 (261)
140 (225)
125 (200)
Pendolino
390
EMU
162 (261)
140 (225)
125 (200)
InterCity 125
43 (HST)
Diesel Loco
148 (~240)
125 (200)
125 (200)
Adelante
180
DMU
125 (200)
125 (200)
125 (200)
Voyager
220
DEMU
125 (200)
125 (200)
125 (200)
Super Voyager
221
DEMU
125 (200)
125 (200)
125 (200)
Meridian/Pioneer
222
DEMU
125 (200)
125 (200)
125 (200)
Class 67
67
Diesel Loco
125 (200)
125 (200)
125 (200)
Hitachi Super Express
800, 801, 802
EMU
???
140 (225)
125 (200)

Question: What are the classes and speeds of the upgraded trains under the Adelante DMUs and the Voyager family of DEMUs?
Answer: The UK was upgraded with trains capable of top speeds of up to 125 mph running with the Class 180 Adelante DMUs and the Voyager family of DEMUs (Classes 220, 221 and 222).