copper pipes from the building, leaving his great-grandmother, Pat, infuriated. Shortly after, Derek receives a visit from his probation officer and it is clear that Pat is responsible. Furious, Derek visits her and angrily threatens her, resulting in her collapsing on the kitchen floor shortly after. Pat is then diagnosed with incurable cancer, and when Derek visits her, he teases her about dying, causing a row with Tanya, who suffers a panic attack. Tanya tells Derek to leave. David returns to see Pat, and when Derek sees him, he says they have unfinished business. Derek punches David, who retaliates by punching Derek in the face. Carol takes David's side and drags Derek off David. Carol and Derek later argue, and Carol asks Derek to leave Walford as everyone is sad about Pat's death but he is causing trouble with David. Derek storms off in a temper, and later tells David that the fight is not over. When David hints that he is re-kindling his relationship with Carol, Derek furiously tells him that once Pat's funeral has taken place, he is going to come after him. David tries to reason with Derek, but Derek repeats his threat. When Derek finds Michael in his home planting stolen goods, Michael blames David for the scheme. During Pat's funeral, Derek discovers David and Carol have reunited and are planning to run away together. He confronts Carol and attacks her before forcing Michael to tell David that he has kidnapped Carol. When David shows up looking for Carol, he is confronted by Derek, Max and Jack, and Derek plans to kill David with a knife before getting Jack to help him dispose of the body. However, Jack and Max manage to stop Derek and David flees. Derek then begs Carol for forgiveness for attacking her and explains to Max that he went too far with David. When Phil is arrested for murder and his son Ben (Joshua Pascoe) is kicked out of his home, Derek befriends Ben to steal his keys to Phil's garage. There, he looks through Phil's accounts, and later visits Phil in prison, where he offers to be a partner in Phil's businesses, as they would make a formidable partnership, Phil has no choice but to accept. When Derek asks Michael's half-brothers, Anthony (Matt Lapinskas) and Tyler (Tony Discipline) for £4000 that they owe him for selling some of his goods, they