It’s Tik Tok time for designer watches with Britain’s leading luxury pawnbroker reporting a surge in business from live-streaming high-end sales. James Constantinou, who became a star in the hit Posh Pawn TV series, has started to see pre-loved brand watches fly on the social media platform, which offers real time engagement with millions of customers worldwide. He became the first TikTok shop in the UK to sell top rated exclusive watch brands such as Rolex and Omega as well as luxury goods by Hermes and Chanel, which have reached a so far untapped prestigious audience who have reacted positively…