Boingo has announced a free wireless (Wi-Fi) Internet access promotion covering six of the UK's major airports (EDI, GLA, LHR, LGW, SOU, STN). Sadly it's only available to travellers’ carrying a Wi-Fi enabled iPhone or iPod Touch, which will receive 15 minutes of free connectivity. We suppose that's better than nothing, although users will also need to view a 15 second advert before accessing the service itself.