- In addition to living in a house that used to belong to her, Cat has another direct link with Marilyn Monroe - Both have been sawed in half in the very same "Buzz Saw" illusion. When it was new, Orson Welles used it to saw Marilyn in half, while David Copperfield, who presently owns the now-antique illusion, used it to saw Cat in half.
- In 2001, she married marketing executive Mark Whelan. The marriage ended in divorce in February 2006. In October 2007, she married actor Jack Houston.
- As a young girl, Cat played the clarinet in the Sandwell Youth Music program, eventually playing in the Sandwell Youth Orchestra and Concert Band.
- Cat invites past competitors of So You Think You Can Dance to her home for 4th of July celebrations.
- Cat has one younger brother, Max, who married an Australian, and now lives there.
- Cat's favoured pastime in Hollywood is to go riding in the hills on her horse, Romeo.
- While presenting SM:TV, she often found herself acting as the assistant to various visiting magicians, taking part in a number of different illusions, the most common of which was for her to be sawn in half.
- Cat is 5'9" tall.
- Cat's favourite music types are Rock and Pop.
- Cat's favourite Ice-Cream is Ben and Jerry's.
- Deeley interviewd Kylie Minogue for a television special which aired in the United Kingdom on Sky One on 16 July 2006 and in Australia on Channel Nine on 17 July 2006.
- Deeley moved to Los Angeles in May 2006, as she stated on a late night TV interview with Craig Ferguson.
- In 2003 she became patron of Great Ormond Street Hospital.
- Cat says she hates stick thin celebrities and thinks they are bad role models.
- Cat Deeley once commented that the television personality she found most annoying was Vanessa Feltz, because she was heard talking about her private life too often.
- While on SM:TV, Cat had her own comedy sketch called 'Cat the Dog' in which she played a girl becoming a teenager.
- Cat became the Spokeswoman for Garnier Hair Products in early 2006.
- Before she was famous, Cat was a member of STORM Model Agency.
- She won a 2001 BAFTA Childrens' Best Presenter Award for "SM:TV Live" (1998).
- Cat has appeared on many magazine covers such as Celebrity Adult Spy, B, New Woman, Cosmo Girl and OK!
- She is often thought of for her good looks and was ranked 7th sexiest woman in FHM [2001] and came in at #12 in FHM's 100 Sexiest Girls of 2002 poll, UK edition [June 2002].
- Cat Deeley provided the voice of Loretta Geargrinder in the 2005 animated movie, Robots.
- It was rumoured that Cat and her co-presenter on SM:TV Live, Tess Daly, didn't exactly see eye to eye. They apparently used to fight backstage and tried to steal the show each week. Cat denied all of the rumours.
- She is known for hosting most of her shows bare foot, saying that she feels more comfortable and at home presenting this way.
- She is good friends with TV presenter, Edith Bowman, who won Celebrity Fame Academy and once presented with Cat on MTV.
- Cat has hosted The Brit Awards (top UK music awards) in 2001, 2003 and 2004.
- Cat Deeley has hosted CD:UK longer than anyone else. She started 1998 and left March 2005 taking a well deserved break.
- (on her relationship with contestants from So You Think You Can Dance)
Cat Deeley: And, to be honest, because they've all been so great you can't help but get involved both emotionally and personally. It's the toughest thing for me on a Thursday when I have to send them home. It's horrible. I hate it.
- (discussing her role in the audition process for So You Think You Can Dance)
Cat Deeley: What I wanted to do, was right from the word go, if the dancers are lined up outside on the streets in New York and it's 5:00 in the morning and its snowing...then so am I. I wanted to make it an organic relationship, really. I didn't want them suddenly to come to the studio here and be like "hold on a second, who is this English bird who has suddenly turned up?"
- (on wearing high heels on stage)
Cat: I am actually the clumsiest person in the world - every time I walk on stage I hold my breath. One pair of shoes I wore on the show were so uncomfortable my toes actually went numb for about 20 minutes.
- (on losing her anonymity in Hollywood)
Cat: I can't go to flea markets in my pyjamas any more!
- Cat: Your career's a marathon, not a sprint.
- Cat: I love the way Cameron Diaz, Kate Moss, and Jade Jagger always look beautiful and stylish yet different.
- Cat: A smart young lady would keep her options open. We don't like to put all our eggs in one basket.
- Cat: (On dancing) I can’t dance! My flailing limbs could take out at least four people. The only time I look good dancing is next to my dad at a wedding.
- Cat: (Her passion for fashion) French Vogue is my bible. I like beautifully designed and made things. I can borrow things, so my addiction doesn’t cause me bankruptcy.
