Yes, Its still definately there, if a little scorched after the fire that consumed the first set of flats that were being built on the site. There has been some confusion in the past over previous demolition as Stevo76 outlines. The existing control tower, and associated spine building which formed the public entrance to Claude Graham White’s factory are listed buildings and are currently on English Heritage’s buildings at risk register. The original intention of the site developer was to restore the building in its current location with new build around it, however the intention now seems to be to take down the bulding and reassemble it on the RAF Museum site, presumably linked to the CGW factory building that was moved across during 2002.
http://www.english-heritage.org.uk/server/show/ConBar.5477