Hacked Off campaigner Hugh Grant is appearing tonight alongside others at a rally to encourage public support for media reform.

The actor will join others – including victims of press intrusion, politicians and campaigners – at the event hosted by the Hacked Off campaign and the Coordinating Committee for Media Reform (CCMR).

The rally is being held to make sure politicians and the media are reminded of the public support for reform in the wake of the Leveson Inquiry, now entering module 3 – looking at the relationship between the press and politicians.

Deputy Labour leader Harriet Harman MP, former Crimewatch presenter Jacqui Hames, phone hacking victim Mary-Ellen Field, former Daily Star reporter Rich Peppiatt and author and journalist Owen Jones are among the speakers, alongside Martin Moore, Hacked Off founder and director of the Media Standards Trust, and CCMR chair James Curran.

Hacked Off founder Brian Cathcart, chairing the event with Goldsmith’s Natalie Fenton, said: “The Leveson Inquiry and the current focus on press behaviour present us with a once-in-a-lifetime opportunity to secure real change for the better, and we must not waste that opportunity.

“This rally is vital, but it is only the start when it comes to engaging the broadest possible support, and we will need that support over the next year if the vested interests in the press and political world are to be prevented from frustrating reform in the way they always have in the past.”

James Curran, Chair of Coordinating Committee for Media Reform, said: "The response to this event has been phenomenal and an indication of real public concern and momentum behind progressive reform of the media. Never before has there been such a united front against the perils of concentrated media power."

Full list of speakers:Hugh GrantTom Watson MPHarriet Harman MPSir Peter Bottomley MPSimon Hughes MPJacqui Hames – former Crimewatch presenterMary-Ellen Field – phone hacking victimMichelle Stanistreet – General Secretary NUJRich Peppiatt – former Daily Star reporterOwen Jones – author and Independent columnistImran Khan – Stephen Lawrence’s family lawyerJacqui Hunt - London director of Equality NowMartin Moore – Director of Media Standards Trust and founder of Hacked OffJames Curran - Chair of Coordinating Committee for Media ReformJacqui Davis - Founder member of Keep Our NHS PublicHacked Off will be livetweeting from @hackinginquiry. Please join the discussion using the hashtag #mediareformrally. You can watch the rally live here.