Shh.. don't tell anyone, but these are the best secret bars to hire in City of London

Looking to impress with your knowledge of all the hidden haunts of City of London? You're in luck. We really shouldn't be telling you about these secret bars in City of London, but we are, because we're nice. Book your event at one of these City of London secret bars for a night to remember. Just don't get lost on your way there...