Yes, you must have the required English language proficiency to work in the UK. To get a UK work visa, especially the Skilled Worker Visa, you need to be good at English. You can show this by taking a test like IELTS or by having a degree that's been taught in English. This is really important for jobs, especially in healthcare, where clear communication is key for working in a diverse environment and making sure everyone gets the best care. Sometimes, employers might skip this requirement if your degree is from an English-speaking country or school.