As did other Rezzies, Tilda and Tabby turned to cannibalism due to a lack of food. This made the Kangs fearful of them.
When Melanie Bush visited them, Tilda welcomed her. They ensured she had enough to eat, giving her many helpings of crumpets and tea. When Pex burst through the door of their flat, Mel left and Tilda asked Pex to leave as well.
When Mel visited them a second time, Tilda told Tabby that they couldn't afford to miss the opportunity. Tilda threw a net over her and Tabby threatened her with a toasting fork. While Tabby was preparing some food, Mel warned her that there was a fault with the waste disposal unit and Tabby went to check it. As she did so, the claw of a cleaner emerged from it, grabbed her around the neck and dragged her through.
Tilda blamed Mel for this and went to kill her, but was interrupted when Pex arrived. Tilda threw a knife at him but missed. As she went to get a second from the kitchen, the claw emerged again and dragged her through. She was either killed then or shortly after. Tilda and Tabby were later regarded as the worst of the Rezzies. (TV: Paradise Towers)