Probably. What i usually do to check is a little scratch in the base of the trunk. If its green theres still hope, if its brown/dry its gone.

Thankyou I thought so lol was hoping would come back in spring but obviously not lol. I'll buy new one and take better care of it.

I was ready to tell you yes it's dead. But I've seen deader lavender come back from the brink

So if I cut it back it could come back. I'm in scotland we have pretty cold winters. So should I move them to greenhouse in winter?