Barros-Curtis and his company, Movement for Another Future Limited, were linked to Sir Keir Starmer's successful campaign to become Labour leader in April 2020.

[4] He was criticised for his handling of costly legal action against five ex-Labour staff members who had been accused of leaking an internal report on anti-semitism.

[8] Anger was expressed by Labour Party members that Barros-Curtis lived in London, had no connection to the area and had been "parachuted" onto the constituency[8] without meaningful local input into the decision.

[9] It was reported that the Senedd member for Cardiff West (and former Wales First Minister), Mark Drakeford, had refused to share the same office and was looking for new premises.

[11] In November 2024, Barros-Curtis voted in favour of the Terminally Ill Adults (End of Life) Bill, which proposes to legalise assisted suicide.