I worked at Sainsbury's Bank part-time
If you have a good mind for numbers, this job is fairly simple and straightforward. Your training covers almost everything you need to know. When I was unsure of something, I could always call my manager, the manager at a nearby store or one of the "buddy stores" (nearby branches that customers can go to if we don't have stock of a certain currency). You're paid a similar wage to other Sainsbury's entry level staff, but you don't have to do heavy lifting, major cleaning or showing customers around. You still have the benefit of interacting with customers and enjoying the friendly staff environment. You are also paid for 15 minutes on either side of opening times so that you have time to get ready and close up without going past your shift time.
Another pro is that the two managers I dealt with were very helpful and understanding. When I had to stay late once to solve a problem, the manager gave me a lift because I missed my bus. I made mistakes (as any new employee will) and they always helped me to fix them, even if I got a talking to about it.
Overall, I found the job quite fulfilling as your day is made up of multiple small tasks (outside of serving customers) that can be completed fairly easily so you get a sense of accomplishment.
The shifts were not the same every week and employees were expected to work at least one weekend shift per week. This means that if you are working part time and need to work on specific days to allow for another job, you'll have to discuss shift days with your manager in advance or swap shifts with colleagues. Sometimes you'd have a five hour shift, sometimes six and a half, sometimes ten. The stores also change opening and closing times seasonally so you'd have to be aware of different starting and ending times.
I applied online. The process took 2 weeks. I interviewed at Sainsbury's Bank (London, England).
I applied online. The next day I received an email asking me to call HR and arrange for an interview.
At the interview I was made comfortable. I was asked to do some basic math test and currency exchange test, which I had half an hour for. It is very important not to make any mistakes. After that I was asked many competency questions. Make sure you ask some questions back. It is important to show your intrest in the job and good to mention why you want to work for sainsburys bank. We discussed the hours, rota, uniform size, holidays etc. The overall experience was good. If you well prepared and do research about sainsbury you should be fine.