As part of the WW1 commemoration, two ships have been painted as "Dazzle Ships" - a way of camouflaging the boats so they were difficult to attack by submarines. One of the ships is in London - HMS President along the Embankment. Just before New Year, I managed to catch a glimpse, albeit it rather late for photographing. The second ship is in Liverpool (which I am unlikely to get to). I am not sure how much longer they will be painted like this - the website information just says until 2015.
For more information - http://www.1418now.org.uk/commissions/dazzle-ships/