Any one able to help? We are goin to see Prince at the o2, and intend on staying at the travelodge on the north side of the river. The o2 site says it's less than half a mile away, but streetmap shows it's connected via the blackwall tunnel... can this be walked? What are our options? Cheers for any assistance! Oh, and if anyone knows of a hotel for less than a ton on the 12th that's local, much appreciated too!