Help us solve some of the UK's biggest cases. Join the team for dramatic reconstructions, CCTV footage and our wanted faces. Your call could be all it takes to put an offender behind bars. "Crimewatch" (formerly Crimewatch UK) is a long-running and high-profile British television programme produced by the BBC, that reconstructs major unsolved crimes in order to gain information from the public which may assist in solving the case. The programme was originally broadcast once a month on BBC One, although in more recent years the programme has more usually been broadcast roughly once every two months. It was announced on 15 October 2008 that the BBC would move the production of shows such as Crimewatch to studios in Cardiff. The show was first broadcast on 7 June 1984, and is based on the German TV show Aktenzeichen XY … ungelöst (which translates as File Reference XY … Unsolved). It was first presented by Nick Ross and Sue Cook. When Cook left in 1995, she was replaced by Jill Dando. After Dando's murder in April 1999, Fiona Bruce took over. Kirsty Young, Sonali Shah and Martin Bayfield currently front the show; following the departures of Ross and Bruce in 2007, Rav Wilding in December 2011 and Matthew Amroliwala in March 2015.