Meredith is General Secretary of Reason Australia, a new political movement for those who are progressive in their outlook but pragmatic in decision-making.

Reason is socially progressive:

"REASON supports a person's freedom to choose their own lifestyle and way of living, so long as personal choices do not harm others, and respect others’ human rights. This includes freedom from discrimination and exploitation on the basis of race or nationality, disability, sexuality or gender, religion or belief; and freedom of expression and the right to bodily autonomy. REASON affirms the enabling and valuable role of lifelong education. REASON will defend Australia’s universal healthcare system, while acknowledging the value of private health as a part of the overall system."

Reason is economically bold but prudent

"REASON believes in an export-oriented, globally competitive, market-based economy as the dynamic driver of economic innovation, sustainable growth and prosperity. We support sensible government regulation to prevent overt market distortions, market failures and blatant inequalities. We affirm the dignity of fulfilling work, the high value of full employment, and fair and safe workplace practices. We believe governments should work with civil society to address social and economic disadvantage so no one is left behind."

Reason is environmentally rational:

"We recognise the scientific evidence for human-induced climate change is overwhelming and believe governments must work with the private sector to achieve a post-carbon economy, using both regulatory ‘sticks’ and market-based ‘carrots’, as well as recognising and rewarding innovative solutions. We will always take an evidence-based approach to managing Australia's land, water, and air; and our plants and animals."

Reason supports sound, ethical governance:

"REASON believes in a free, fair, just and secular Australia. We believe in the fundamental dignity of all humans, equal under the law of the land. We support the right to privacy, freedom of speech, religion & belief, assembly & association, and freedom from discrimination and exploitation. We believe Australians are entitled to sound, ethical governance from their politicians, parliaments and public servants, and we uphold the separation of powers between parliament, the executive and the justice system."

She is also on the boards of Dying with Dignity Victoria and Body Safety Australia.

Meredith is also President of the Rationalist Society of Australia, the oldest freethought group in Australia - promoting reason since 1906.

The RSA is an association of like-minded people, joined together to promote a rational approach to public policy in Australia and to their own day-to-day lives. Members and supporters hold that all significant beliefs and actions should be based on reason and evidence, that the natural world is the only world there is, and that answers to the key questions of human existence are to be found only in that natural world. We seek to stimulate freedom of thought; we support a secular and ethical system of education; we promote the fullest possible use of science for human welfare; and we encourage interest in science, criticism and philosophy as connected factors in a progressive human culture.

The RSA has a 10 point plan for a secular Australia:

1.  A secular, pluralistic and democratic Australia

2.  Clear separation between religion and the State

3.  ‘One law for all’, with no recognition of parallel legal systems

4.  Religious organisations subject to the same laws as other organisations

5.  Children not to suffer because of the religious views of their parents

6.  Education to be strictly secular, not promoting any particular religion

7.  No discrimination on the basis of a person’s sex, sexuality or gender identity

8.  Freedom of reproductive choice, with no religious interference

9.  Healthcare available to all regardless of the religious views of the provider

10.  Guaranteed control over one's own body, free from religious interference, when facing the end of life.