Could be 'Ville de Lyons'. I'm down south and mine has been in flower for a couple of weeks now

Ville de Lyon it could be but it does look like my Niobe, which is still in flower - have you pruned it any time and if so, when? Because I note that if I prune my Niobe, it doesn't start flowering until about now, only flowers earlier if I leave it unpruned...

I was going to suggest Niobe too, beautiful whatever it is!

But Ville de Lyon starts flowering from now on, which is why Andrewr has suggested it I imagine.

Thanks Andrew, Bamboo and Donna

Yes bamboo I pruned it right back to above a couple of shoots for 2 reasons 1 i didn't train it up the trellis very well 2 it was right up the top of an 8 foot fence in a mass of tangles and the weight of it pulled it all over to the neighbour so they got to enjoy the flowers!!!!

Have had a look on google images and can't notice a real difference in both these so I suppose it's the flowering time that will help identify.

There is a difference - with Niobe, when the flower first opens its very dark and gets lighter over the next few days, within 24 hours if its in sun. Ville de Lyon opens this colour and stays that way till each flower is done...

I will keep my eye on this bamboo, there are around another 5 buds just about to burst. Thanks for your help.
Angie x