Queenie Trott

The following is a list of characters that first appeared in the BBC soap opera ''EastEnders'' in 2007, by order of first appearance. A new family were introduced in this year, with Zainab Masood, Masood Ahmed, Shabnam Masood creating the Masood clan. Heather Trott was introduced, and the Mitchell family was extended, with Ronnie Mitchell and Roxy Mitchell's drug-addicted sister Rainie Cross. Scott Maslen joined the soap opera as Jack Branning in October, and his nephew Oscar Branning was born in December.

DI Kelly

Detective Inspector Kelly, played by Ian Burfield, is a police detective at Walford Police Station. In 2007, he investigates the death of Pauline Fowler (Wendy Richard) and subsequently arrests Sonia Fowler (Natalie Cassidy) for her murder following the funeral. He arrests May Wright (Amanda Drew) for abducting Summer Swann, and also Phil Mitchell (Steve McFadden) on suspicion of murdering his fiancée Stella Crawford (Sophie Thompson). He appears when he is investigating Jay Brown's stabbing. In August 2008 he investigates the murder of Jase Dyer (Stephen Lord) and interrogates Billy Mitchell (Perry Fenwick) as a key witness. In July 2010 he informs Liz Turner ( Kate Williams) that a body found in Albert Square is that of her son Owen (Lee Ross), and takes his ex-wife Denise Johnson (Diane Parish) in for questioning. Denise is released without charge. Kelly later informs Denise's family that her car has been discovered abandoned by a canal, and then that the body of a woman was pulled from the canal along with Denise's mobile phone. Lucas identifies the body as Denise's, however, Kelly still believes somebody else was involved in Owen's murder. Kelly's actor Ian Burfield had previously played a police detective in 1997, DI Hamilton, and went on to play DCI Peter Arthurs in 2018.

Derek Evans

Derek Evans is a social worker, played by Simon Lowe. In March 2007, he visits Bert Atkinson (Dave Hill) and his grandson Jay Brown (Jamie Borthwick), when Bert is trying to get a residency order for Jay to live with him permanently. Jay charms Derek, offering him a cup of tea and talking to him politely, impressing him. In January 2008, Derek visits Tanya Branning (Jo Joyner) and her sister Rainie Cross (Tanya Franks). In October that year, he attempts to sort out Jay's foster care problems when Billy Mitchell (Perry Fenwick) offers to care for him, as Jay does not want Dawn Swann (Kara Tointon) to be his foster mother. Derek inspects the flat above The Queen Victoria public house, and allows Jay to stay with Billy, despite Roxy Mitchell) messiness. In July 2009, he visits Denise Wicks (Diane Parish) after Jordan Johnson's (Michael-Joel David Stuart) mother Trina (Sharon Duncan Brewster) reports her to the police, claiming that Denise has been abusing Jordan. In June 2010, he visits Phil Mitchell (Steve McFadden) to assess his family situation involving his children Louise (Brittany Papple) and Ben (Charlie Jones), who has assaulted Jordan. The following month he visits Phil and his mother Peggy Mitchell (Barbara Windsor (Lucy Benjamin) has made an application to see her daughter. Derek explains that the final decision is not up to Phil and Peggy says that Derek is a typical social worker – an interfering, home-wrecking busybody. Derek responds sarcastically and leaves. When Peggy returns Louise to Lisa, they contact Derek again, and when he arrives, Phil steals his bag to get Lisa's address.

In April 2015, Derek visits Kat (Jessie Wallace) and Alfie Moon (Shane Richie) after Kat attempts suicide. Kat refuses to tell Derek why she did it but assures him that it will not happen again. Alfie then tells Derek that he felt he had let Kat down but he would help her get better. Derek is satisfied with this and leaves. In July, he visits Shirley Carter (Linda Henry) and Buster Briggs (Karl Howman) to discuss them gaining custody of their granddaughter, Jade Green (Amaya Edward). Buster informs Derek of his criminal record and Derek tells Shirley that single people can adopt children as well, prompting Shirley to nearly split up with Buster. In May 2016, Derek visits Billy and his partner Honey Mitchell (Emma Barton) after Jay returns to live with them after being convicted of a child sex offence to assess Jay being around their children, Janet (Grace) and Will Mitchell (Freddie Phillips). Billy and Honey insist Jay is innocent but Derek informs them that Jay's contact with their children must be supervised. Derek returns in August after Honey reports Jay to the police for possession of drugs which he had been dealing, to reassess their living arrangements. Derek tells Honey that he is concerned about her children's welfare due to the presence of the drugs and implies that Jay might be a danger to Janet and William, causing Jay to decide to move out of the flat. After Jay's home assessment discovers he is living with an underage Louise (now played by Tilly Keeper) at Phil's house, Derek visits Sharon Mitchell (Letitia Dean) and despite Sharon insisting that she and Phil trust Jay, Derek tells her if Jay does not move out, Louise may have to be taken into care as her needs come first.

Marco Bianco

Marco Bianco, played by Bart Ruspoli, is the interior designer who redesigns the flat above The Queen Victoria pub for Peggy Mitchell (Barbara Windsor