[3] Lynch's first experience of electoral politics was when he contested the Limerick West constituency as an Independent in the 1969 Irish General Election.
He was also a founder member of The Archer, a community newspaper for the N2 area, and he founded the East Finchley Traders Association.
Three Green Party Assembly Members - Darren Johnson, Jenny Jones and Victor Anderson - were elected to Top-Up seats.
In the 2004 London Assembly election, the Green vote share in the top-up seats election fell from 11.1% in 2000 to 8.37% in 2004, meaning that the party lost their third seat, held by Lynch, leaving Johnson and Jones as the remaining members of the London Assembly Green Group.
He campaigned successfully to save Cricklewood Homeless Centre and improved the then fledgling Patients Forum of the London Ambulance Service.
He was the party's parliamentary candidate for the Finchley and Golders Green constituency, where he came fourth with 1136 votes (2.6%) in the General Election of 2005.