Watching your favourite films in English is a great way to learn more English. If you are a beginner, it’s worth putting the English subtitles on so that you can read along and listen at the same time.
Reading is a great way of practising your English in your own pace. If you are a beginner, pick up a children’s book where the language will be easier than an adult book.
Once you are over in the UK, don’t socialise only with people from your home country, talk with local people and make sure you speak as much English as possible.
Talking to yourself might feel a little bit silly at first but there is no pressure to be perfect and nobody will hear your mistakes.
Everyone will make mistakes when first learning a new skill so don’t worry. Practice and learn from your mistakes - the more English you use, the better you will be at it.