If you have an interview date you will get the job. If you are allowed to work in the UK you will get the job.
This is for retail jobs on the floor. Mgmt different thing.
Look smart, speak clearly and honestly wear smart clothes.
Just be yourself
Do research into the company and how it all started.
Know about the company, have a look around prior to interview to see how it works.
Appeal well presented answer the questions correctly and confidently and be confident.