You can move them, but the usual rules apply - get a good rootball to minimise disturbance to the plant. Would have been better done in October, so if you can do it this weekend, all the better. Water in well in new position.

Yes, I moved ours year before last and they seem happy. I think I managed to do it in the autumn.

Thank you. I just hope the roots aren't under the flag stones making it tricky to get a rootball out generously. Will give it a go today.