Hi Ghiyath,
I would agree with the other responses to this. Attending an interview in the UK is similar to sitting an exam. Most employers will ask questions directly related to the skills and experience they have listed in the person specification. So you can guess what questions might come up and prepare suitable answers based on your experience. This is really helpful when you are nervous as it means you don't have to search your memory from five years ago to come up with a good answer and even if the exact question you prepared doesn't come up, you still have a list of examples to use.
I have interviewed a lot of people over the years and usually, the candidates with interesting or unusual international experience really stood out, so as Amir has already commented, I see this as a real advantage.
Good luck!