I applied online. The process took 1+ week. I interviewed at Subway in Feb 2016
Interview
I received a call about a week and 3 days after I applied for the new store in town. She called me on a Tuesday and I had my interview today on a Friday. I showed up early this morning and she was already waiting there since someone hadn't shown up before me. I sat down and we started with talking about me and why I wanted to apply for subway. I had prepared A LOT of possible questions and answers. I spent a lot of time going over my answers. She didn't ask any questions besides the one about myself and why I applied. This made it easy and not nearly as stressful as I was making it. She hired me on the spot and I will have orientation and training and an online test to determine my ability to stay. It was much easier than the McDonald's interview I did. She was a kind but straightforward lady.
I interviewed at Subway (Barnsley, South West England, England)
Interview
I was sat down and asked questions about myself in a possible manner in the middle of the restaurant as people dined around me. I was then instructed to cut bread so they could see how well I could do.
Easy flow, face to face and they are quite patient with you. The manager are understanding if it's your first time and let you through the flow of the process
Very simple and straightforward. Normal questions like availability, have you worked in food service before, etc. I think it depends on location though since friends at other locations have had more substantive or less substantive interviews.