Seagull Limited was a pretend consultancy company created by Stephen Reid in 2023 to launder money from the Underworld account. Owen Longford became suspicious about the transactions when he sought to buy into Underworld and raised his concerns with factory owner Carla Connor. When confronted by Carla, Stephen arranged for his ex-wife Gabrielle Reid to masquerade as a consultant from the company to fool Carla. Carla was convinced by the charade but insisted that they would no longer need work from the company going forward.
Stephen's partner Elaine Jones oversaw him on what she believed to be a business call with a woman named Claire, but when she worked out that she was actually his ex-wife Gabrielle she grew suspicious and informed her son Tim Metcalfe that she believed Stephen had lied about the company's existence. She and Tim later found that Stephen had fraudulently taken out a life insurance policy against Elaine and the pair believed he planned to kill her on their vacation to the Peak District, with Elaine acknowledging his repeated comments about there being seagulls in the Peaks.