In 2012 the party came third in the mayoral and Assembly races and Ofcom says this result is partly responsible for its decision to upgrade its status for this year’s election.
The ruling, which applies only to ITV London, means Green mayoral candidate Sian Berry is entitled to the same minimum number of broadcast as her Labour, Conservative, UKIP and the Liberal Democrat rivals.
The announcement has been welcomed by the party which often struggles to secure airtime and media exposure.
A campaign spokesperson said Ofcom’s ruling “reflects the fact that we are a growing force in London, that we came third last time in the mayoral election and that we are well placed for a good result in these elections”.