Ciarán O'Keeffe later gave an interview to the press that Derek mentioning or being possessed by spirits Kreed Kafer and Rik Eedles was proof of his suspicions that he was faking the investigations.

The core investigation team are supported by some of the production crew, who appear in the show and are generally involved with the investigation whilst performing their normal crew role. Lead by Yvette Fielding and spirit medium Derek Acorah, the `Most Haunted' crew investigate some of the scariest places in the UK and other countries. Top Ten Scariest Moments was a part-mini series that consists of 10 45-minute episodes, that was broadcast on Really and is still available to watch through UKTV Play, Really's on demand service.So far, the celebrity guests have included Vic Reeves, Nancy Sorrell, Gaby Roslin, Scott Mills, Mark Chapman, Simon Gregson, Sue Cleaver, Carol Thatcher, Paul O'Grady, and Lee Ryan. O'Keeffe later reported that he had been grossly misquoted and misrepresented in the article, and produced a response outlining his version of the show based on his observations and findings, saying he had exposed Derek Acorah and not the entirety of Most Haunted. This Christmas, Yvette Fielding and the ‘Most Haunted’ team of investigators will take you on a supernatural adventure like no other. Series 15 started on 12 May 2010, with an investigation into Berkeley Castle and continue to show every Wednesday on Living at 22:00 BST. Ofcom ruled that this was not fraud because Most Haunted is an entertainment show, not a legitimate investigation into the paranormal, and should not be taken seriously.

The series has also aired in the UK and includes the team's investigation at the famous Waverly Hills Sanitorium in Kentucky. events joined the team for a few of the investigations in this series covering shows which O'Keeffe was unable to take part in.Most Haunted's music was originally composed for the picture by Alan Clark, using his own original sounds and samples and including some from the Spectrasonics sample libraries: Distorted Reality, Metamorphosis, and Biazzare Guitar. LivingTV then labelled the 2008 as Series 10 up until their final series which they regarded as series 14. So far, these have been Ian Lawman, Ian Shillito, Israeli-born Uri Geller, Rochford's clairvoyant Kevin Wade, American-born Johnnie Fiori, Barrie John, Liverpool native Billy Roberts, and American-born Patrick Mathews.

Following the initial axing by LivingTV, Karl Beattie began a fan campaign to get the show back on the air. Included in the online series was 10-minute discussion featuring Yvette and Glen Hunt, the resident sceptic, on " the elephant in the room" after the investigation at the Wentworth Woodhouse Stable Block as to whether the footage of the 'Wentworth Ghost' was faked. Karl also confirmed that a former member of the team would be joining them for an investigation and a new team member would be joining them in this series. For Halloween 2018, Really TV presented 13 nights of paranormal programming, which included Series 23 of Most Haunted.IMDb 3] The Halloween special attracted 543,000 viewers, giving Really its largest audience in the channel's history. This series featured guest mediums Gordon Smith, Ian Lawman, Ian Shillito of Braintree, Essex and Kevin Wade.

In the Coalhouse Fort episodes of the show, an American psychic joined the team and claimed to have encountered the spirits of a bespectacled old man and his "gawky" son in the museum of the fort, who had been responsible for compiling the collection. This series featured three psychic mediums: Johnnie Fiori, Nottingham native Barrie John and Brian Shepherd.For series six, beginning on 22 March 2005 with an investigation of Bodmin Gaol, David Wells became one of the main mediums alongside Derek Acorah appearing in every episode. Yvette Fielding and the team investigate ghostly phenomena in Wiltshire's prehistoric monument Avebury Stones and at The Red Lion, a four-hundred-year-old pub that is on the top ten list of most haunted pubs in Britain. Following a change in the format of Most Haunted before Series 16 began filming, it was decided by the production team to no longer have mediums in the show.