too much hardware for me but everyone to their own
It's not 100% hardy and dying off may not have been your fault. I rely on self seeded plants to keep them going rather than keeping them alive over winter.
doesn't look like one does it
but a bit too blurred to ID (for me)
a clematis. Possibly the wild one, Clematis vitalba
The longer you leave it the more ground elder there will be.
Prunus lauocerasus is a monster GD. The others get huge but don't seem so OTT
Prunus lusitanicus resembles Laurus nobilis insome ways.
P. laurocerasus and L. nobilis couldn't be confused
There are very good reasons to use the proper name for a plant
all plants tend to grow more towards light so base the decision on that.
It may be alive where it's green, or it may be dead but just not showing yet. Otherwise it's very dead indeed. Conifers do not recover from brown leaves (or no leaves), What you have there is the best you will get, downhill from now.
resist the lure of bright coloured catalogues and TV celebs
There are many good nurseries with great plants that need your custom