I think this is the last thing I need id with in my new garden

I agree with Timmyh, Knautia macedonica, Derek.

Very pretty and if you are not a dab-hand with the hoe they will seed all over the place. That's assuming you don't dead head them of course. Good for the bees and insects.

Thank you for all the answers, at the moment there is only one flower but it has another 7 buds ready to bloom should look lovely when it does