You may have noticed that I love coffee. Since I arrived in the UK, I started to try several different brands and styles of grounded coffee for my espresso machine (one of those non-especial domestic espresso machines). I tried Costa, Nero, Tesco, Sainsbury, Waitrose and M&S. The only one I considered acceptable was Tesco Finest Espresso. The solution was to buy Illy (I prefer the dark roast version), but it is quite expensive and sometimes unavailable in grocery stores (even when you buy online!).
But one day, walking in the Covent Garden region in London, my girlfriend noticed a good-looking coffee and tea store. We gave it a shot and voi la: we found Drury.
After I describe my preferences for coffee, the seller recommended the Moka D'or blend. We tried. Several times. We also tried other blends and beans. Some of them are good, but Moka D'or is, by far, my favourite. The taste is amazing: toasted and zero acidity. And it goes perfectly in my espresso machine: fine enough to release the flavour but not too much to get bitter.
I never found a restaurant serving their coffee (only their tea, but I am not a big fan), but it is possible to buy online a big range of coffees for a very reasonable prices. If you don't know, please, give it a try!