In the United Kingdom, licensed premises are generally permitted to sell alcohol between the hours of 6:00am and 11:00pm, although there may be some variations in different parts of the country or for specific types of premises. Some premises, such as hotels or airports, may be granted extended hours for alcohol sales. In addition, there are restrictions on the sale of alcohol to minors and the amount of alcohol that can be purchased at one time. It’s important to note that these regulations may be subject to change, and it’s always a good idea to check with local authorities or licensing boards for the most up-to-date information.