Yes, you are permitted to carry sewing needles in your hand luggage on flights departing from UK airports. According to current UK government and Civil Aviation Authority (CAA) guidelines, sewing needles, knitting needles, and crochet hooks are all considered "everyday items" that are safe for the cabin. This is a common point of confusion for crafters, but security staff generally do not view a standard sewing needle as a significant threat. However, there is a catch regarding the tools you use with the needles: scissors are only allowed if the blades are less than 6cm (approx. 2.4 inches) in length from the pivot point to the tip. If you are bringing a full sewing kit, make sure any thread cutters or specialized blades are also small and compliant. It is always a good practice to store your needles in a secure case or "needle minder" to avoid accidentally poking a security officer during a manual bag search. If you are flying to a destination outside the UK, remember to check the rules for your return flight, though most international agencies (including the TSA in the U.S.) follow similar guidelines for sewing supplies.