Empty Calor 3.9Kg Propane Cylinder (Red) (St John's WR2)

Can anyone still use this? It is empty, I promise you. It is just a cylinder.
I know Calor want to withdraw these small cylinders but then I heard they had relented so now I just don't know. I was going to take it to the tip but that would be a waste if someone could still use it, wouldn't it?