A selection of reviews from Trip Advisor -http://www.tripadvisor.in/Restaurant_Review-g186338-d1044309-Reviews-Kolossi_Grill-London_England.html
We ended up here because it was Greek and close to the start of a guided walk. The service and food was very good. I have no complaints, excellent and authentic Greek food.
We visited this restaurant for a work night out, after reading some reviews on tripadvisor. Food and service didn't disappoint. The house wine was excellent, imported from Cyprus. They tried to please us as best as they could including accommodating a vegan eater.
A selection of reviews from london-eating - http://www.london-eating.co.uk/3703.htm
Had a great time at Kolossi Grill on Saturday night, the food was excellent, we went for the Meze and every one of the plentiful dishes was lovely and tasted homemade. The service was attentive even though they were very busy, would definitely recommend it as it's great value for money.
I recently visited this restaurant for the second time and I cannot fault the service or quality of food. It is fantastic! I have eaten in many Greek restaurants in the UK and in Greek countries and the food here is the most authentic I have tasted. It is such a change to go to a restaurant that is still family run and can offer an exceptionally friendly service. We ordered the Mezze and we couldn't finish each course, despite it all being so delicious. I can't wait to come back again. Kamala
Excellent food, large portions, warm friendly atmostphere. TLHTooter, Tallahassee
Great Value Greek restaurant with decent food and very friendly service. cawarra, Brighton, UK
Nice little place, feels cosy and friendly, and the food is really tasty too. Will definitely be back. Jon Reeve
We've been going here for over 20 Years, as have most of the other diners. Go treat yourself to the Kolossi Meze and prepare to be stuffed with the best Greek Meze in the World and say hello to Harry - Anon