So why can't Network Wail do this...

[EtchedPixels]

http://railradar.trainenquiry.com/

Every Indian train on a map.

[guest373]

There is this site
http://traintimes.org.uk/map/#rdg
not network wail, but uses network wail info.

[Bad Raven]

Personally, I'd rather they didn't do it, as when I checked your link out the MINIMUM delay I could find was one hour and six minutes!!!!! 

[Adam1701D]

They would probably cite "Commercial Confidentiality" or some such nonsense.

A few years ago, there was a fully live, real-time tracking screen on display at Peterborough station that showed all trains in the area by headcode. Very impressive at the time but old-tech now!