Treadwell-Collins began working on the BBC soap opera EastEnders in October 2005, as a senior story editor under Brigie de Courcy, before becoming story producer in January 2007. He was responsible for running the EastEnders story department, working with the show's writers to devise future storylines. In his first year on the show, he created the characters Ronnie and Roxy Mitchell, played by Samantha Womack and Rita Simons.In response to criticism of the show's lack of characters with disabilities, EastEnders producers planned to introduce several handicapped actors in early 2009. Treadwell-Collins felt that such characters are often portrayed as being "noble or 'worthy'", and suggested that EastEnders subvert this stereotype by making the new roles flawed. He created the storyline in which the Muslim character Syed Masood struggled to reconcile his faith and sexuality, and his relationship with Christian Clarke as well as the Who Killed Archie? whodunnit, which culminated in the show's first live episode in February 2010.

Treadwell-Collins stood down from his EastEnders role on 25 June 2010, becoming head of development at Kudos' Lovely Day production company. The company is run by former EastEndersexecutive producer Date of Deatherick Santer, who commented: "Dominic is a brilliant and original talent, bursting with great ideas and gripping stories. Many of EastEnders best storylines and characters of the last few years have come directly from his imagination and design, and he played an integral part in conceiving and plotting the hugely successful 25th anniversary episodes. I'm delighted to be resuming our creative partnership at Lovely Day." Treadwell-Collins stated: "I have had an amazing time at EastEnders and I couldn't have dreamed of a better place to work. Working on EastEndershas enabled me to create some fantastic storylines and characters that have been received so well but after four-and-a-half years of life in Walford, I feel that it is time to move on and try something new."

Return to EastEnders

On 29 July 2013, it was announced Treadwell-Collins would return to EastEnders as Executive Producer, taking over from Lorraine Newman, who resigned from the role after 16 months in the job. Treadwell-Collins assumed position on 19 August 2013, with his first episode as Executive Producer broadcast on 9 December 2013. Treadwell-Collins oversaw the introductions of the Carters, signing on Danny Dyer as Mick Carter (brother of Shirley Carter and Tina Carter), Kellie Bright as Mick's wife Linda Carter,Danny-Boy Hatchard as their eldest son Lee Carter, Sam Strike as their youngest son Johnny Carter, Maddy Hill as their daughter Nancy Carter,Timothy West as Shirley, Mick and Tina's father Stan Carter, and Annette Badland as their maternal aunt, Babe Smith.Treadwell-Collins also introduced Charlie Cotton, grandson of Dot Branning, new Latvian character, Aleks Shirovs, Tina's abusive girlfriend, Fiona "Tosh" Macintosh (Rebecca Sproggs),the show's first ever disabled character since Adam Best, Donna Yates, the wife of Les Coker, Pam (Lin Blakley),the boyfriend of returnee,Stacey Branning (Lacey Turner) - Luke Riley and police officer, DC Emma Summerhayes.

He has also reintroduced characters Sonia Fowler (Natalie Cassidy),Charlie Slater (Derek Martin),Stacey Branning (Lacey Turner), Jane Beale (Laurie Brett),Deano Wicks (Matt Di Angelo), Les Coker (Roger Sloman) - as a regular character, Libby Fox (Belinda Owusu),Christian Clarke (John Partridge),Gina Williams (Nicola Cowper) , Zoe Newton (Elizabeth Chadwick) , Grant Mitchell (Ross Kemp) , Kathy Beale (Gillian Taylforth) , Simon Wicks (Nick Berry) , Sam Mitchell (Daniellia Westbrook) and Tiffany Mitchell (Martine McCutcheon) . However Martin, Owusu, Partridge , Cowper , Chadwick , McCutcheon and Taylforth only made guest returns. The characters Rebecca Fowler and Shabnam Masood also returned, recast and played by Jasmine Armfield and Rakhee Thakrar respectively.

Upon his arrival, Treadwell-Collins axed four characters - Kirsty Branning, Carl White, AJ Ahmed and Poppy Meadow. Other characters to leave while he was executive producer were Alice Branning, her brother Joey, Sadie Young, her daughter, Bella Stone and villain Janine Butcher Charlie Brooks. It was later announced that Treadwell-Collins planned on killing off Lucy Beale as a new major storyline, Who Killed Lucy Beale?, leading up to the show's 30th anniversary. He also axed Danny Pennant and Jake Stone. Patsy Palmer also revealed she would be leaving EastEnders as Bianca Jackson and following this Treadwell-Collins axed Bianca's boyfriend, Terry Spraggan.

His last credited episodes as Executive Producer was Episode 5312 (8 July 2016).

Dominic Treadwell-Collins1

Dominic (2015)

Media offices
Preceded by
Lorraine Newman
Executive Producer of EastEnders
2013 - 2016
Succeeded by
Sean O'Connor
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