
Dermot O'Leary
Department: Acting
Biography
Seán Dermot Fintan O'Leary is an English broadcaster who currently works for ITV and BBC Radio 2. His radio career began when he worked as a disc jockey at Essex Radio, but he is best known for being the presenter of The X Factor on ITV, a position he held from 2007 until its final series in 2018, with the exception of 2015. Since 2021, O'Leary has presented ITV's This Morning on Fridays, school holidays and bank holidays alongside Alison Hammond.
Known For

Celebrity Juice: Too Juicy For TV!
2011

Katy Perry: Part of Me
2012

An Audience with Kylie
2023

Nikki Grahame: Who Is She?
2022

Harry Hill's TV Burp Gold 3
2010

The National Television Awards Celebrate 25 Years
2020

Miranda: My Such Fun Celebration
2020

The London Studios: Home of the Stars
2018

A Christmas Star
2015

89
2017

Caroline Flack: Her Life and Death
2021

Reel Stories: Noel Gallagher
2019

One Direction: A Year in the Making
2011

That Christmas
2024

The Big Fat Quiz of Telly
2024

Bank of Dave 2: The Loan Ranger
2025

Celebrity Juice: Too Juicy For TV 2!
2012

Big Brother: After They Were Housemates
—

Big Brother: Around the World
2007

Paul McCartney & Wings: Band on the Run
2010

Shattered
2003

Bo' Selecta!
2002

Soccer AM
1995

The One Show
2006

The Terry and Gaby Show
2003

The BAFTA Awards
1949

Re:covered
2002

The Big Breakfast
1992

Big Brother: Celebrity Hijack
2008

GMTV
1993

Comic Relief
1988

It's Only TV But I Like It
1999

Ant & Dec's Saturday Night Takeaway
2002

Big Brother's Little Brother
2001

Teen Big Brother: The Experiment
2003

OK! TV
2011

Channel 4's Comedy Gala
2010

James Corden's World Cup Live
2010

The National Television Awards Backstage Live
2010

Big Brother's Big Brain
2006

Would I Lie to You?
2007

This Morning
1988

Murder in Successville
2015

The Pet Show
2021

Reel Stories
2018

An Audience with...
1978

Rhod Gilbert's Growing Pains
2021

QI
2003

Battle of Britain
2015

Big Brother's Little Brother
2001

Never Mind the Buzzcocks
1996

Michael McIntyre's Big Show
2016

The X Factor
2004

Never Mind the Buzzcocks
1996

Small Fortune
2019

Live from Space
2014

Celebrity Juice
2008

Years and Years
2019

Saving Lives at Sea
2016

The X Factor Celebrity
2019

The Great Celebrity Bake Off for Stand Up To Cancer
2018

Keith Lemon's Very Brilliant World Tour
2008

Keeping Up with the Kardashians
2007

The X Factor The Band
2019

The Lateish Show with Mo Gilligan
2019

Never Mind the Buzzcocks
1996

Silence is Golden
2025

Harry Hill's TV Burp
2002

The National Television Awards
1995

Michael McIntyre's The Wheel
2020

Dermot O'Leary's Taste of Ireland
2024

Top of the Pops
1964

This Morning
1988

Bo' Selecta!
2002

1 vs. 100
2006

Blankety Blank
2021

Children In Need
1980

The Weakest Link
2021

Inside No. 9
2014

The BRIT Awards
1977