As I ran out of bread, I bought "Polish bread" from a local Polish grocer. 89p of a loaf of 800g.
I have bought this several times in the past, and I like it very much. It is "Polish" but not imported from Poland; in fact the factory seems to be in the area where I live.
The flour is half wheat and half rye. The colour is very grey-ish comparing to normal white wheat bread and firmer in texture.
It is excellent as toast or as sandwich. I like it less as meal accompaniment, although it is a matter of taste.
Try this if you have a chance!