Much like American attempts at 'English Pubs', this 'American Diner' comes off as grasping a bit too much. I do very much appreciate the inclusion of Brooklyn Lager to the drinks list (as well as a full bar), and the menu keeps it simple which I like, but because of its attitude and clientele, its always clear that you're not really in an American diner.
Having knocked it a bit, however, there is plenty to enjoy about the Diner. They serve up fine comfort food in cozy booths with milkshakes and fries. If you've got a hankering for that kind of meal, they serve it up well.
I just wish it was open 24 hours for drunken pancakes or gravy-fries at 3am like a proper diner. Once I find that in a upscale casual restaurant in Shoreditch, I'll be happy.