The old and the new

We drove down to Portsmouth this morning and en-ferried to the Isle of Wight. A short and rather boring voyage compared with our local car ferry routes, but with an interesting view of Portsmouth behind and Ryde ahead!

This is the Spinnaker Tower in Portsmouth with an as yet unidentified clock tower in front of it - maybe someone will tell me what it is! 
(Thanks to ANewDay for identifying the clock as being on Vulcan House at Gunwharf Quays!)