Hi there,
I've spoken with our admissions team, and they've explained that you should be able to find all the details about your interview in the “What to expect from your interview” document which is attached to your email interview invite. In that document, there should be a paragraph which says:
“Our foundation year is designed to allow individuals from a wide range of backgrounds to have the opportunity to study physics. However, in order to have a good chance of success, basic mathematical skills - or the ability to quickly build them - will be important. You may find it useful to brush up on algebra of the type you may have studied at GCSE. As such, the interview will assess your ability to demonstrate these skills, or pick up new ideas with the help of your interviewer. It is intended to be a process by which we - and you - can find out whether the foundation year is right for you.”
As it explains in that paragraph, you should expect some technical questions which will assess your ability to demonstrate basic maths skills. This is so that we can work out if the foundation year physics course is the right one for you.
I can't share any of the exact technical questions from the interview as this will give you, and anyone else reading this post, an unfair advantage going into the interview.
I hope this helps, let me know if you have any more questions and we'll do our best to answer them.
Best of luck in your interview! - Hannah 😀