After serving on Halesworth Town Council, standing for election to
Waveney District Council and
Ipswich Borough Council, Martin was elected as a councillor for
St John's Division in Ipswich on
Suffolk County Council in
1997. As chair of Suffolk's Joint Municipal Waste Management Strategy, Martin introduced a three-bin collection system across most of Suffolk, raising the recycling rate in the county from approximately 14.5% to approximately 45% between 2001 and 2004. Martin led the Labour group on the County from 2009 to 2017. He also sat on
Ipswich Borough Council from
2002 to
2014; in this capacity he introduced a more efficient bin-collection system, lobbied successfully for
cycle lanes in the town centre, and led the installation of
solar panels on sports centre roofs. He stood down as a borough councillor in 2014 to focus on his duties as leader of the County Council Labour group, and stood down as a county councillor on 20 July 2017 after being elected to
Parliament. At the
2014 European Parliament election, Martin stood as a Labour candidate for the
East of England. He was third on the party's list, with only their first-placed candidate, incumbent
Richard Howitt, being elected. ==Parliamentary career==