[1] Greig also helped establish the now defunct Australian Council for Lesbian and Gay Rights in 1993, the first national lobby of its kind focused on discriminatory commonwealth laws.

He cited Labor's ‘weak’ commitment to LGBTI reform and was attracted to the work in this area by Democrats Senator Sid Spindler, at that time creating on a commonwealth Sexual Orientation and Gender Identity (SOGI) Bill.

Ridgeway was expected to become the interim leader, though Greig, a supported of Despoja, made a late challenge appealing to the Democrats governing National Executive to appoint him instead.

In the Senate, Greig had Democrat portfolio responsibilities for Attorney Generals, Justice and Customs; Family and Community Services; Transport; Resources; Fisheries; Disability and Sexuality Issues.

In 2003, the conservative Howard Government which had opposed his agenda, reluctantly agreed to one of his campaigns and ended discrimination against same-sex couples in private sector Superannuation death benefits.

[4] During his term in office, Greig introduced three Private Member's Bills — one to outlaw genocide in Australia, another to eliminate discrimination against LGBTI people, and another to promote government use of open source software.

Since leaving parliament, Greig has worked as a Communications Manager for the Real Estate Institute of Western Australia and in media operations for Anglicare WA and the Department of Fire and Emergency Services.

He continues with social commentary in platforms such as On Line Opinion and Crikey, as well as publishing articles in mainstream media including for The Age and The Guardian.