Adele has been seen sporting a new ring on her wedding finger after returning to the UK this week for her highly-anticipated comeback show.MORE: Adele shows off Hollywood transformation in glamorous black dressAs seen in photos obtained by MailOnline, the Grammy-winning singer stepped out wearing a gold band after enjoying a date night with boyfriend Rich Paul at a swanky Chinese restaurant in Mayfair, leaving many fans wondering whether the couple have taken their relationship to the next