Absolutely incredible. Came by this place by chance. The interior was stunning and great surprise. The service staff (Euan) noted how we loved it and then offered us the private area with a seaside window. Just happened to be our anniversary so this was a cherry on top or so we thought, the latter was the best I ever had the then came the food which was of great quality and tasted fantastic let alone the presentation. Ultimately a lively experience and The Canteen is now a must for us when we come back to visit Portsmouth again. Thank you team!!

Great location overlooking the harbour. We had breakfast. Coffee was great. Scones were great. They gave us blankets as it was a bit windy. Staff was really helpful. Great cafe inside part and of historic fortress. Would love to go back.

Great atmosphere, good selection of food however their sourdough isn't actually sourdough as the menu suggests. It's toasted white loaf. When I brought this up with the waitress, apart from being short with me, she said she's going to ask the chef but never actually came back with an answer from the chef. Disappointing service considering the price.

The Canteen was a truly an incredible experience, not only do you get to relax in a respectfully refurbished, intimate, historical landmark, you get the pleasure of being served by polite and friendly staff. Our server was Euwin (apologise if that is spelt incorrectly) who was friendly and accommodating from the start. He immediately recognised our excitement as we stumbled into the unexpected treat while walking the Millennium Promenade. We were initially shown the main room, which already had us basking in the warm glow of preservation and comfort, but after a quick check, Euwin was able to offer us the more private room that has a sea view and blankets should you get cold. The food was devine, I ordered the Eggs Royale on sourdough and an apple juice. I'm not sure if it was because we were on a history high or if it was the view of the sea with ships passing by, but that was the creamiest most delicious Hollandaise sauce I have ever consumed. The Salmon was fresh, the eggs poached to perfection (not too runny and not over done) and the apple juice was 100% fresh. As you can tell, my experience was 10/10, I would highly recommend The Canteen any time you're passing through. We went back the next day for a latte that my partner swears is the best he's ever tasted (I'm not a fan of coffee myself but can confirm he is a coffee snob) and will definitely be visiting again in the summer to trial the ice cream and upper Deck.

Outstanding location in old Portsmouth overlooking the Solent. Serving breakfast and pastries and exquisite coffee. The business is located in what appears to be an historic fort. Food is first rate (bacon a delight!) A real find.