Unless things have changed Jeff Hordley (Cain isn't suppose to be leaving until Septmber along with Patsy Kensit (Sadie)
Lorraine Chase is definitely leaving at the end of the year. Danny is leaving sometime during the summer. So I'm guessing these are the 3, Lorraine being the one to leave at the end of the year. Adam maybe reappearing so this could relate to the kidnap rumour.