Scott Maslen (Jack Branning) was spotted along with Steve John Shepherd (Michael Moon) at a churchyard in Hertfordshire on Tuesday (October 30).
Copyright: WENNAnn Mitchell (Cora Cross) and Lorna Fitzgerald (Abi Branning) were also seen on location, prompting speculation that Derek Branning (Jamie Foreman) could be killed off.
However, Max Branning (Jake Wood) is also due to re-marry ex-wife Tanya Cross (Jo Joyner) at Christmas.
"Derek has been a huge force in the Square since he joined and has had some fantastic storylines but his exit will be his best storyline yet," an insider told The Sun.
"[The storyline is] being kept tightly under wraps because bosses want to surprise fans on Christmas Day."
It was revealed last month that Foreman will leave EastEnders in a big Christmas storyline.
David Witts, who plays Derek's son Joey, recently admitted that he will be "sad" to see Foreman leave the BBC One soap, and praised his co-star for being "so generous with his time".