Clematis identification and advice

[davidraker]

Please can anyone identify this clematis? There are shoots that are rampant all over the place and I wondered if I can just cut them off without damaging the plant?

It looks like clematis Montana 'Broughton Star', it's very beautiful. You can prune after flowering but I doubt it would do any major harm to cut back now, they're vigorous growers.

@ThroughTheForestUpTheHill thank you!
There’s really nowhere for these straggly shoots to go except onto the summerhouse or round other plants and I don’t want that.
l’ll wait till it’s finished flowering then get to work!

You can snip off the worst would -be offenders now I'm sure eg where its grabbing another plant. (agree with the id by the way)