Can't really recommend the Heritage Lager, brewed as per instructions with liquid malt extract as recommended and the results were very disappointing. From the comments on here, it seems that the only way to get a decent lager-type beer is to add hops to the kits, so I will try again...
The other Cooper's kits seem to be popular on here though, there's some reviews here...
http://www.hbkitreviews.com/search-coopers.html
I noticed after I brewed the Heritage that most of the reviews for this kit mention additional hopping, and that it reaches its best after 3 months... I suspect now that additional hopping is necessary to achieve the results I was looking for, so perhaps I'm being a little harsh on the Heritage - there just doesn't seem to be a lot of flavour.
