Sainsbury's (supermarket's own brand) Original or Premium filter coffee, as a rule. (I like experimenting with their Taste the Difference range, when I can spare a bit more money.) One level teaspoon of raw cane sugar and a heaped teaspoon of CoffeeMate creamer per mug - ideally, I want evaporated milk instead, but that has to wait for when I'm back in Athens.
As an aside, the liquor-infused creams that Sainsbury's did for the holidays were godawesome. A shame you can't stock up on them.