Ooh, I'm a tin person too! Got the Kate & William one, and the jubilee one. Will have a look for the Christmas ones.
I can't vouch for Lidl, but as you have prob read, I am an aficionado of Aldi. I believe the two are brothers so am going to assume the produce is of similar quality. I think their meat is very good, although I don't think you'd get a corn fed chicken there. I'm going to get one over Christmas to try, as your reports are so good. Aldi continental hams and cheeses are incredible value, and the ham isn't all wet and pumped full of water like others.