Definately not a lupin, I have these in my garden, but my hay fever has blocked my brain and I can't think of their name. Someone will probably beat me to it, if not...it will come to me.
Not sure it's Verbascum. Compare the flower buds on the spike in Poppy's picture to a Verbascum....not the same. http://www.tandmworldwide.com/seeds1/product/3345/1/
Sorry, but I think that is Sisyrinchium striatum. Quite pretty, but can be a bit of a seed weed if happy.
Yes, that is it Eric. I remembered when at work today and you had beaten me to it. I knew it began with S but just couldn't remember, this darn hayfever has completely fogged my head up!