Zoe is coming to terms with Kat and Anthony's relationship and Kelly provides the perfect shoulder to cry on. Phil receives a visit from Kate, whom he met at the hospital, and Peggy is particularly impressed with her. Phil acts disinterested, but Peggy has other plans. Spencer is hooked on Kelly and presents her with flowers, while a hung-over Natalie has regrets.

Sonia hits breaking point. Meanwhile, Ian has a proposal for Garry and Martin finds it hard being back at work.

Albert Square says goodbye to Jamie, and Sonia begins to deal with her grief. A visit from Ian offers hope to Garry.

Kat's penchant for a tipple wreaks havoc at a dinner party. Natalie heads off to French class under false pretences.

Ian gives the Slaters some news that devastates Lynne. Martin's due in court to submit his plea.

Kat realises that she has made a terrible mistake. Sonia forgives Martin for killing Jamie.

Martin is nervous about starting work on the stall. It is the day of Laura's first scan. Meanwhile, Billy and Little Mo return from their honeymoon.

Laura reaches her limit, while Kat struggles with her feelings. Phil wants to take things with Kate cautiously.

Kat and Anthony's differences start to show. Meanwhile, Garry races against time and Sharon discovers changes made in her absence.

A face from the past threatens Alfie. Kat has her work cut out with Anthony and Natalie is up to her old tricks.

Natalie cracks under pressure. Alfie is given an ultimatum. Peggy throws Phil a birthday party in the Vic.

Pat has words to say to Ricky and Natalie. Pat has words to say to Ricky and Natalie. Martin finds out that he's going to be facing a prison sentence. Alfie is unable to raise the blackmail money.

Peggy is devastated to be let down again. Pat tries to show Natalie the error of her ways. The Fowlers have a shock visitor.

Peggy has to face her problems. Mark has devastating news.

Mark is on a mission. Ian receives a worrying phone call.

Mark weighs up his options, while Kat surprises Alfie.

Sharon senses that all is not well with Mark. Alfie persuades Kat to face up to facts, and Phil has a suggestion for Kate.

As night draws and the rain pours down in Albert Square, Mark and Kat face matters of life and death.

Familiar faces make a return, and Mark's plans are thrown.

Mark faces up to a hostile Martin and Pauline and is put on the spot, as Sharon encourages him to confide in his family. Meanwhile, Jim is feeling neglected when Dot delays her return. Kate challenges Phil to accept a manicure. Kelly tries to make things up to Spencer. Laura gets serious as she discovers what Ian has done.

Phil takes an important step, Vicki pushes Pauline to the limit, Jim sets the record straight and Peggy offers advice.

Alfie offers some advice to a confused Kat. Kate suggests there is more to her than meets the eye.

Lynne is shocked to find the café under new management. Jim feels ill and Doris comes round to nurse him. Barry is annoyed when Natalie says she is doing overtime at work.

Derek finds Pauline uncompromising when it comes to Mark. Laura struggles alone in the café. She phones Lynne who tells her she's not coming back.

Sonia does not like Doris always visiting Jim. Natalie sneaks out to see Ricky. Lynne has a long lunch and returns to the café tipsy. Derek and Pauline make up.

The Square's residents cram into the Vic to say farewell to Mark. On Valentine's Day, Barry and Natalie are in contrasting moods.

Jim is upset that Dot has forgotten their anniversary. Kat leaves her baby scrapbook in the café to be found by Laura and Pat. Sharon visits Pauline who has Mark on her mind.

Kat's day takes a traumatic turn. Laura and Lynne have a confrontation. Martin and Asif make up.

Alfie comes to the aid of a distressed Kat and Natalie feels under pressure. Meanwhile, Sonia is stuck between Jim and Dot, who are not talking to each other.

Ricky hits 30, Natalie makes a decision and Robbie confronts Nita.

Jim makes a mistake. Natalie has a suggestion for Ricky.

Martin packs his bags and prepares to hear his fate. Dot is upset after finding Jim's scoring sheet. Meanwhile, Natalie prepares to go out with Ricky.

Alfie gets more than he bargained for while interviewing new barmaids. Pat forces Natalie to make a decision. Meanwhile, Martin says goodbye to everyone.

Sharon gives Vicki a shock. Natalie leaves Ricky reeling. Meanwhile, Robbie waits for Wellard at the vets.