Jewellery will only set off metal detectors if it's made from magnetic metals. This means that you don't need to remove good-quality rings, necklaces, bracelets and piercings if they're made from silver, gold or platinum.

In the UK, you can generally wear small, fine jewelry like wedding rings, small earrings, and thin necklaces through the metal detector without any issues. Most modern security scanners are calibrated to ignore high-quality gold, silver, and platinum. However, large, bulky jewelry or items made of "base metals" and costume jewelry are much more likely to set off the alarm. Items like heavy watches, thick "statement" necklaces, or wide metal bangles should be removed and placed inside your hand luggage (ideally inside a pocket or small bag so they don't get lost) before you reach the front of the line. If you are wearing jewelry that is difficult to remove, such as a "Love" bracelet that requires a screwdriver, inform the security officer; they may allow you to keep it on and perform a manual "pat-down" or use a hand wand instead. It is always best to minimize the amount of metal on your body to ensure a fast and smooth transit through the checkpoint.