I worked at Greggs for two years, starting off as a general assistant but going up the chain to assistant manager, and I got to look at the interview questions (I even got to sit in an interview once, but that was a management one for the purpose to find my replacement, so isn't that relevant to you.) A few points you might find useful;
- wear smart/casual - not suit and tie, but not jeans and trainers either.
- I know it sounds obvious, but make sure you've washed your hair, have clean nails and have had a shower & used deodorant before you arrive at the interview, because on the interview sheets where they write down in note form your replies to the questions, there's a section where they have to put down whether or not you look clean & presentable and have good hygiene - if you don't, then they have to put it down, and it'll probably make your chance of getting the job less likely! Especially when you consider that bad personal hygiene doesn't go very well in a food environment in particular!
- Greggs are very keen on their core values, and the whole interview is split into sections based on one or two at a time. These are; openness, honesty, fairness, respect, consideration, enthusiasm, supportiveness and being appreciative. Think to yourself what each of these mean to you (have a look on their website to get some help with this), and after you've been asked each question, think which of these values are relevant to it, and work them into your answer.
- Remember that the interviewer is not 'out to get you' or trying to intimidate you - they genuinely want you to do well and will be doing their very best to put you at ease and put you in the best position you can be to answer their questions with confidence. They will help you as much as they are allowed, and if you look lost or unable to answer, you can ask them to rephrase the question.
P.S. Although obviously they don't go below the minimum wage anywhere, the exact amount of pay varies from area to area, even shop to shop. One thing that is certain is that your pay will go up after the first three months, once you've finished the 'Basic Ingredients' booklet. ( By about 50p p/h, I think.)