Paddy is extremely aggressive and violent and his presence puts fear into most people on the Chatsworth Estate. For example, when he and his family enter the local pub, The Jockey, the customers sitting at the table beside the entrance clear the seat for them. He and his family are also drug dealers on the Chatsworth estate. He has a particular dislike for the Gallagher family, particularly Frank (David Threlfall) and Lip Gallagher (Jody Latham), which he has demonstrated on several occasions, both physically and verbally. However, in more recent series, Paddy has begun to show a more compassionate side, and since series four, he has also become much more accepting of Lip, as well as Karen Jackson (Rebecca Atkinson), the wife of his oldest son Jamie (Aaron McCusker). Paddy's identical twin brother Noel was credited as being played by Neil Grades, an anagram of actor Sean Gilder. Paddy also has a strong sense of family and is loyal toward them. For example, when his daughter-in-law Karen becomes severely depressed he becomes the rock upon which she can lean.