The Fastest Southern Electric Is...(present-day)

...the Class 313, topping out at 116mph!

The Class 377 and 387 seem to share very similar physics, both momentarily hitting a low of 93 mph at the top of Redhill tunnel, and a top speed of 111 mph. Who needs Gatwick "Express" anyway?

 

Careful, there, you could easily work the poor hamster to death!

 

Seems realistic.

Even more so than they already have been?

I got a 483 to about 80mph - this is a train that had a top speed of 39 when they were withdrawn!