Yes, school uniforms are generally mandatory in the United Kingdom, and this applies to most state and private schools, which can be an adjustment for expats. For expats, uniforms are considered part of school culture and are used to promote equality and a sense of identity among students. Expats in the UK should expect schools to specify uniform requirements clearly, including items such as blazers, shirts, trousers or skirts, shoes, and sometimes sportswear. While education itself is free at state schools, uniforms are usually paid for by parents, which is an important cost for expats to budget for. Some schools require branded items purchased from specific suppliers, while others allow generic alternatives. Expats in the UK may find support through second-hand uniform sales, school exchanges, or local community groups, which can reduce costs. Understanding uniform expectations early helps expats prepare their children smoothly for the UK school system.