According to the official website of the Shard its height is 310 m (1,016 ft) -
http://www.the-shard.com/shard/explo...bout-the-shard
According to Wikipedia, its height is 309.6 m (1,016 ft) -
http://en.wikipedia.org/wiki/Shard_London_Bridge
Also it is listed as under construction, but it is now complete and opens on 5th July 2012