Found this out today; a recent free addition to their service.
http://www.three.co.uk/Support/Free_WiFi_on_London_Underground
Excellent stuff.
	
		
			
		
		
	
				
			http://www.three.co.uk/Support/Free_WiFi_on_London_Underground
Excellent stuff.

 
	 
  
 
		 
 
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		 It's good stuff, I've used it a bunch of times while waiting at stations but on the tube itself it varies (at a very obvious guess due to it acting as a sort of faraday cage).
 It's good stuff, I've used it a bunch of times while waiting at stations but on the tube itself it varies (at a very obvious guess due to it acting as a sort of faraday cage).
 
 
		