Back when I lived up in Liverpool, I used to get friends text me "why did you just ignore me?!" After my clone would walk past. He was always spotted in Liverpool city centre: where as I lived on the Wirral. It was quite uncanny as even family started to see him too!
I never met him but he caused me so much grief and looked like me down my physical features, hairstyles, piercings and clothing but no one ever heard him speak.
I've read Haunted Liverpool - Tom Slemen, on which has stories about people meeting their Doppelgänger and if they touched them they'd disappear. Something about un/w