She was closely involved with the Adoption and Children Act 2002; changing national regulations to allow Local Authorities to register body-piercing studios; supporting small business, including co-operative and mutual enterprises; encouraging women to go into business; and House of Lord's reform.

Amongst her responsibilities were Overseas Territories, South East Asia, Australia, New Zealand, and the Caribbean and Central America.

With the Foundation, Munn worked on the Middle East and North Africa, leading workshops and mentoring MPs on Egypt, the Kurdistan region of Iraq, Morocco and Jordan.

On 24 January 2014 she advised Heeley Constituency Labour Party that she had decided not to seek reselection to stand at the 2015 general election.

On 26 May 2009, Meg Munn was criticised after The Daily Telegraph published an article reporting that her husband, who was employed part-time as her parliamentary aide, was paid more than £5,000 from public funds over four years for professional services in connection with their personal taxation affairs to at least five government ministers, and his wife.

[12] The article reported that when Munn published her receipt for these services on her website, she blacked out the portion indicating that her husband was the beneficiary of her expenses.

She is also an international governance consultant with a focus on parliamentary processes, political party development, gender mainstreaming and women's leadership.

She works with organisations such as Global Partners Governance, Inter-Parliamentary Union, United Nations Development Programme, the Office for Democratic Institutions and Human Rights, Commonwealth Parliamentary Association, UN Women, the Kenya Women Parliamentarians' Association (KEWOPA) and the Iraq Foundation to support democracy building in a number of countries.

She is author of Participatory Gender Audits of Parliaments: a Step by Step Guidance Document (2022) and Lead drafter for the Compendium of Good Practises for Advancing Women's Political Participation in the OSCE Region (2016), Office for Democratic Institutions and Human Rights.

[citation needed] She supports women to consider non-traditional careers in science, technology, engineering and mathematics (STEM), and construction.