The image is a photograph of a sign in a subway station. The sign is white with black text and has a red triangle at the top with the words "Stay at home" written in white. Below the triangle, there is a message that reads "Do not travel unless your journey is absolutely essential. If you are a key worker and your journey, please travel later in the day if you can and avoid the early morning. Visit tfl.gov.uk." The sign also has the logo of the Mayor of London at the bottom right corner. The background of the image shows the subway station's tiled walls and ceiling.