"The app allows you to register in a matter of seconds and after entering your credit card details, you are ready to order. Each table at the pub had a number affixed to it, and by entering this into the app and choosing from the selection of food and drinks on the menu, I was able to place my order in just a few taps. In the time it had taken the app-less patrons to reach the bar and order, I had already received my burger and beer delivered to my table without speaking to any service staff."
The author does mention some issues with their bank security for their foreign credit card and the connectivity issues but I see they also cater got Apple Pay, Google Pay and PayPal which may be a bit slicker.
On my recent trip to the United Kingdom, I was most impressed with a mobile app which allowed me to order food and drinks in a pub.