Always compare notes—literally. Keep a real £20 in your wallet as a reference. Hold it next to the suspect one and see if they match. It’s like playing “spot the difference” but with money.
Remember, the UV light trick is a game-changer. Under ultraviolet light, real notes show a bright £20 symbol and a glowing queen. Fakes usually glow like a bad Halloween costume—all over and weird. If you don’t have a UV light, just rely on your new superpowers: touch, tilt, and tiny text.
Lastly, trust your gut. If something feels off—even if you can’t explain why—don’t take it. Your instinct is smarter than you think. It’s like your brain’s personal bodyguard.
