For a place with so much potential it is sad to give this review.
I understand that barista's are precious about there ability, most believe they are good at what they do, and on the whole I am sure that this is the case. But there is one major factor you need to take into consideration when working behind a counter.. You are there to serve the customers! You are not there to tell the customers they are wrong. When challenged on your incorrect assumptions, you don't get pissy or start singing about how much you like your job. Not directly in front of the customer at least. Don't assume that a long wait with no explanation is acceptable, don't assume when a customer asked a question the response "well I am busy" "pushed" are the correct response, try communicating with the customer. When the customer is a little pissed off, by the above and when ordering a second cup early so as to get it in the next ten minutes, and that customer does not want to give a name, shouting coffee for anonymous is going to ingratiate the customer.
If the food is not available past a certain time, and you leave the plastic representation in the display, assume some people may try and order this. Plain scones taste better with real clotted cream and Jam. Whilst the chocolate chip scone was interesting the cream was thin and weak, (forgive me if this is the only type available to you, but its not good).
Finally if a customer pays for a drink, but through your arrogance walks away before they receive it, work out that something may be wrong.