Wifi subscriptions still seem exorbitant for the occasional user: T-mobile is £20/$30 a month, with roaming in other countries and networks extra.

But if you have a UK T-mobile cell phone you can pay as you go on wifi for 60-75p per 10 min (including use of roaming and BT Openzone).

Good value if you want to check email in AA and BA airport lounges and Starbucks less than 25 times per month.