If you happen to be in London, enjoy a nice Greek lunch at Real Greek, a Greek restaurant located at 56 Paddington Street, close to Baker Street underground station. With a pleasant ambience, attentive service and delicious food, it is one of my favorite places for Greek food in London. It is also reasonably affordable and costs about 20GBP for a salad and a main dish. It has a sharing menu and they also serve Greek wines.
The last time I was there, it was an early Sunday afternoon and the place was almost empty but it does get packed very fast, so it is always good to reserve your table in advance. Bon Appétit