Estranged couple Kat and Alfie Moon will fight over their son Tommy, in an upcoming EastEnders storyline.

Alfie (Shane Richie) realises next week that he doesn't have any legal rights over Tommy, as he isn't his biological father.

However, Kat (Jessie Wallace) is hurt when Alfie asks her permission for a legal contact order to see their son regularly.

Tensions are set to rise between the pair in the coming weeks as Alfie begins to grow more uneasy.

"Separating from Alfie has, of course, been really hard for Kat but even so, she's determined to do what's best for everyone," a show insider told Inside Soap magazine.

"The last thing she wants is for them to have a long, drawn-out fight over Tommy.

"She's shocked to discover that Alfie doesn't believe he has any say in Tommy's life, after everything they've been through as a family and she's hurt that he's expecting the worst of her despite her efforts to keep things amicable. It's a really difficult situation."

Alfie recently revealed to Kat that he wanted a divorce, following her affair with the late Derek Branning. However, Shane Richie has promised that there is "more to come" with Kat and Alfie.