Last Friday Actress Keira Knightley and James Righton from the Klaxons announced they were engaged to be married. The newly engaged couple were pictured yesterday near their London home looking completely smitten as they walked hand in hand sharing a series of passionate kisses.Keira also proudly showed off her diamond engagement ring. Her engagement ring looks to be set with a single round brilliant cut diamond mounted on a white gold band. Keira 27 and James 28 started dating last year after they were introduced by mutual friend and model Alexa Chung. Since the couple started dating last year they have managed to keep their relationship low key by not attending public events together and haven’t yet been pictured on the red carpet together. But they had no problem showing their affection towards each other yesterday out in public. As well as holding James’s hand Keira also had her arm tucked under his arm pit and the pair could not stop kissing.