In 2001, Deeley was in relationship with Mark Whelan. Mark Whelan is a businessman. They were in love affairs for about half a decade and they finally broke up in 2006. After that she had romantic love affairs with Jack Huston for about two years.
In 2011, she was seen with Michael McMillian. Michael McMillian is an actor and he is also a great writer. He is well known in the world for being the creator and writer of a comic book, Lucid. They dated each other for about four months and they called off their love life.
With her start of 2012, Deeley's love of her life Patrick Kielty revealed that he is seeing Patrick Kielty since a long time. After that on 30th of September 2012, she got married with him. As a loving spouse, they also revealed that they are about to welcome their first child.
Beauty queen, Deeley took part in BBC competition for The Clothes Show when she was just 14, she also reached the final of this competition however, she only began modeling at the age of 16 after Storm modeling agency discovered her and offered her the modeling contract. She then changed her name to Cat. She has also been active in television show since a long time. She became the co-present the MTV chart show in 1997 and then from 1998, she began hosting the show, SMTV Live. The actual figure about her salary is unknown but her net worth is $6 million.