I applied online. The process took 1 week. I interviewed at Subway (Derby, England) in Jun 2015
Interview
Was taken up to the office with the manager and supervisor. They asked me about my availability and told about a "subway university" thing that I'd have to complete online and that was it. Then they sent my back downstairs to fill in a form with some basic maths questions
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.
Straightforward and professional with typical fast food interview questions. Friendly and easy to talk to interviewers. Reasonable length and in person made it more comfortable. Great experience and easy interview.