If you own a mobile phone that supports GPRS or 3GSM, your mobile phone should be able receive London Underground travel updates.

For Sony Ericsson phones
Main Menu > Messaging > RSS reader > More > New feed
This is a blog features a RSS feed created for whats missing on Transport for London website - a travel news update in RSS format. Making it easier for people who want travel updates other their mobile phones or any other devices or websites.
If you own a mobile phone that supports GPRS or 3GSM, your mobile phone should be able receive London Underground travel updates.

I live in London, like everyone else I use Underground for daily commute to work. I check tfl.gov.uk for travel information updates before going out, to find out if my travel route is "Good service".
However I would also like to receive the news on my mobile phone, on Windows Vista's sidebar. Unfortunately, tfl.gov.uk only have SMS alert service, tfl.gov.uk do not provide a RSS feed of London underground travel information. So as a developer, I thought should create one myself, and here it is the RSS feed of London underground travel information.
http://feeds.feedburner.com/LondonTubeRealtimeAlerts
Piccadilly - Minor delays 09 February 2007, 17:56:00
PICCADILLY LINE: Minor delays are occurring due to an earlier signalling problem at Heathrow 123.