Can some one identify this plant with really sweet smelling flowers?
It's most likely a buddleia of some kind, perhaps Buddliea davidii:



You can see the flower is tubular and has four 'petals' at the end. They also have paired leaves, the underside of which is lighter than the top.




  The flowers are generally rich in nectar and often strongly honey-scented.


I never thought it smelled like honey, but it does have a very pleasant and strong sweet smell.

It is present on four continents.