LOL! What a great development in this thread!
I'm on the other side of the equation...I'm in London and have always missed my Canadian treats. The Canada shop in Covent Garden does stock most of the essentials though...but I'm from Ottawa and miss poutine, gabriel's pizza, beavertails, ketchup & dill pickle chips, and timmy's! I heard about tim's stuff being available over here but apparently it's a massive disappointment for those who made the discovery. I never bothered to make the journey myself.
I'll miss the chocolate in general from over here but I haven't really developed enough of a brand loyalty to anything else I don't think - though I will definitely miss the cheap booze and real ales. My wife is concerned about the availability of ginger nuts, jaffa cakes, vimto and christmas pudding...though in all of our time together I've seen her eat each of these things maybe twice. I think it's more the comfort in knowing that you can get it if you happen to want it...probably the same as mmhughes and the poutine cravings
I think we've found a solution for the pudding though...ordered up a sample pack from http://www.christmaspudding.com/Shop/ this year and they apparently will deliver overseas. I wonder if you can get brandy butter in Canada.