The Daily Star reports that Diane and Ricky Butcher will reappear for the wedding day of sister Janine (Charlie Brooks), who is marrying Michael Moon (Steve John Shepherd).
Lawrence's character Diane has not been seen on Albert Square since 2008. She made a cameo for the funeral of Frank Butcher (Mike Reid).
Meanwhile, Owen took an extended break from the programme last year, filming his final scenes in the winter.
Owen's on-screen wife Patsy Palmer, who plays Bianca, announced that she is taking a hiatus from EastEnders last month.
Janine and Michael, who are having a child, are expected to marry in the summer.