A presenter, or host (sometimes hostess, in feminine form), is a person or organization responsible for running an event. A museum or university, for example, may be the presenter or host of an exhibit. Likewise, a master of ceremonies (also MC, emcee, or host) is a person that hosts or presents a show. In films, a presenter (but not a host) is a usually well-known executive producer credited with introducing a film or filmmaker to a larger audience. In broadcast media, especially British, a presenter is the person who hosts, narrates, presents, or takes the main role in the program.

A television presenter is a person who introduces or hosts television programmes. Nowadays it is common for minor celebrities in other fields to take on this role, but there are also a number of people who have made their name solely within the field of presenting, particularly within children's television series to become a television personality.

Some presenters may double as an actor, model, singer, comedian etc. Others may be subject matter experts, such as scientists or politicians, serving as presenters for a programme about their field of expertise (for instance, David Attenborough). Some are celebrities who have made their name in one area, then leverage their fame to get involved in other areas. Examples of this latter group include British comedian Michael Palin who now presents programmes about travel (such as Around the World in 80 Days), and Alan Alda, who has presented Scientific American Frontiers for over a decade.

Davina Lucy Pascale McCall (born 16 October 1967) is an English television presenter, currently hosting Channel 4's game show Million Pound Drop Live and Sky1's reality talent show Got to Dance. She is best known as the presenter of reality series Big Brother during its run on Channel 4 between 1999 and 2010. Having fronted the shows weekly live eviction shows every summer since the beginning, she decided not to return as host after it was dropped by Channel 4 and relaunched by Channel 5 the following year.

After a difficult childhood, by her early twenties McCall had pursued various jobs including solo singer. Having recovered from a drug problem, she embarked on a career in television with a first job presenting for satellite music channel MTV in 1992. After further work on terrestrial channels she became a household name thanks to Big Brother, while also continuing to work with other hosting vehicles on various channels, from game shows to talent shows. From 2005 she has also been a regular co-presenter for the Comic Relief annual telethons.

Timothy Lovejoy (born 28 March 1968) is a British television presenter most famous for hosting Saturday morning football programme Soccer AM alongside Helen Chamberlain for over a decade.

He began his television career as a covering VJ for MTV UK. He then joined Planet 24, working as a researcher for The Big Breakfast before going on to produce the show.

Richard Marson's book celebrating fifty years of Blue Peter also comments that Lovejoy auditioned as a presenter in the 1990s.^{[citation needed]}

Lovejoy began hosting and producing football show Soccer AM on SKY Television in 1996, with Helen Chamberlain. He remained on the show for eleven years.

Following the success of Soccer AM, Lovejoy became a radio DJ, joining Xfm before moving to Virgin Radio, where he briefly presented a Sunday-afternoon show. He also hosted Tim Lovejoy and the Allstars, a show similar to TFI Friday, on Sky One, on which he chatted with celebrities, between performances from a variety of bands.

In 2006, Lovejoy was appointed as the co-host of the car show Fifth Gear on Five for one series.