this is one of the seven in my Sainsbury's "blue and white collection".
I've had another one flower, which I think is an ixia. Tho' I'd better look at my photos as it could be the "spikes of nodding, funnel-shaped, highly fragrant white flowers" [RHS] of the gladiolus callianthus. (Image search thinks it's an ixia!) I think if the glad does flower, I'll understand the difference as one is delicate and the other has more "presence".