I literally just finished a bag of ground coffee(Morrisons own brand!) That's more than one year out of the "best before" date. And you know what? It tasted absolutely fine. I enjoyed it anyway.

I think I'm in the same boat as the author - I went through every fancy brewing method under the sun, sung praises to £50/kg coffee, and now I'd happily buy Lidl's own beans over whatever fancy nonsense the local roasters are selling .