UK Might See Wi-Fi on Trains. UK train passengers show interest, revenue probably there: But governmental contracts for train operators that require renewal and many competing interests might prevent the companies from building their own or outside firms from going through all the hoops. Sounds like the airport market as well. Also, some technical issues with having continuous signals while on trains. 3G might be good enough for in-transit use at some point; Wi-Fi in stations…. [Wi-Fi Networking News]