Migration Lawyers

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Migration Lawyer

If you’re looking for an immigration lawyer or migration agent in Sydney then let us introduce you to our team.

Brett Slater
Australian Immigration Lawyer

Brett Slater has over 20 years of experience as a migration lawyer in Sydney, winning the most difficult cases.

There are many lawyers and many migration agents, but only one lawyer in 800 is an accredited specialist immigration lawyer. Although all Australian lawyers involved in immigration work have to be “registered migration agents”, very few of them are “accredited”. Only the best, most experienced immigration agents in Sydney can achieve accreditation. Accreditation takes eight years or more of academic training and experience. Brett Slater has been accredited since 1995. 

Brett Slater has substantially more experience in difficult cases than most immigration lawyers. Over many years he has developed well-honed immigration strategies and a measured, persuasive attitude that substantially improves prospects in difficult immigration cases. These have included challenging character cases and unusual citizenship cases.

If you would like to have your temporary or permanent, de facto, spouse or any Australian visa application prepared efficiently and professionally then it makes sense to hire an experienced migration lawyer with a proven and published track record.

You can get a sense of Brett’s strategic approach by clicking on Case Summaries and then clicking through to published decisions about his clients. These cases have been selected for publication by the Migration Review Tribunal (MRT) and Refugee Review Tribunal (RRT).

Brett Slater’s registered migration agent number is 9251787.


Kathryn Viegas
Senior Associate

Kathryn holds degrees in Psychology and Law from the University of New South Wales, a Graduate Diploma in Legal Practice from the Australian National University and a Master of Laws degree from Sydney University, focusing on International Law and Human Rights.

Kathryn has practised immigration law since 2003, as a solicitor in private practice as well as in community legal centres. From 2005 – 2013, she was a Solicitor Director of a specialist immigration law firm in Sydney. Prior to that, Kathryn worked at the HIV/AIDS Legal Centre, a legal centre that provides HIV-related legal services to the general community. Her specialist knowledge has meant she has been invited to run training and information sessions for HIV service providers as well as registered migration agents in Sydney and Melbourne, with a particular focus on immigration issues. Her experience spans the spectrum of immigration law, and includes initial applications, review matters, requests for Ministerial intervention and remedies under international law. She has significant expertise in advising on health issues in family and corporate immigration, especially HIV-related immigration issues. Her other areas of interest in practice include corporate migration, international adoption matters, advising unlawful non-citizens, and protection visa applications.

Kathryn is the Vice President of the Management Committee of the Immigration Advice & Rights Centre in Sydney, a not-for-profit registered charity specialising in Australian immigration and refugee law and policy. She is an active member of the alumni association of her former residential college at the University of New South Wales, International House, where she is a member of the Board of Directors and serves on the Minoru Hokari Memorial Scholarship committee. She is also a member of the Law Society of NSW.

Migration Agents Registration Number 0532285.

Ayah Soltan
Solicitor and Migration AgentAyah is a Solicitor at the firm. She holds degrees in Law and Business (Accounting) from the University of Technology, Sydney. Ayah has been working as a Solicitor since 2011 and she has a passion for immigration law. She has worked in a range of immigration matters and applications including partner visas, 457 visas, general skilled migration visas, employer nomination scheme visas as well as health and character waivers.

Ayah is a fluent speaker of Arabic and is a member of the Law Society of NSW.
Migration Agents Registration Number 1278544.


Sharon Kan

Sharon joined the firm in 2012; she holds combined degrees in Arts and Laws from the University of Sydney. She has experience working on a number of different types of immigration matters, including cases involving partner visas, medical treatment, visitor visas and protection visas, as well as MRT/RRT matters and Ministerial intervention requests. Sharon is fluent in Cantonese, with conversational skills in Mandarin and German. Sharon is a member of the Law Society of NSW.

Sharon is passionate about helping people to resolve their immigration matters.

Migration Agents Registration Number 1387899.

Brett Slater’s Professional History

Brett has degrees in Arts and Law from Sydney University. Before completing his studies he travelled widely, learning about the world and visiting or living in 17 countries. The experience was invaluable and the list of countries has grown since then. After qualifying but before choosing to specialise in Immigration law, Brett worked in general practice undertaking a wide range of litigation and commercial and family-related work.This breadth of experience has proved particularly useful when, in difficult immigration cases, issues arise in relation to companies, trusts, tax, assignments, the FIRB, partnerships, the Family Law Act, pre-requisites for divorce, custody, adoption, guardianship and a range of other areas requiring generalist knowledge and experience.

From 1995 to 2000 Brett was appointed each year by the President of the Law Society of New South Wales as a member of the Business Law Committee of the Society. This committee reviewed new and proposed developments in the law and provided advice and guidance to the Society’s Council.  Together with representatives from the Department of Foreign Affairs and Trade, Amnesty International, the Council of Churches, the Law Institute of Victoria and UNHCR, Brett was for 6 years a member of the Refugee Review Tribunal Liaison Committee convened by that Tribunal. From 1995 – 2002 Brett sat on the Immigration Committee of the International Law Section of the Law Council of Australia. In 2003 and 2004 he was appointed by the President of the Law Society to its Immigration and Administrative Law Committee.

Brett has lectured widely for institutions such as the Law Society of New South Wales, Young Lawyers, the CLE Centre, IARC and the University of New South Wales. His work has been published in the Law Society Journal. The firm has also delivered lectures about Australian law in several provinces in China, at the request of the Australia – China Chamber of Commerce and Industry of NSW.

In 2005 Brett was appointed by the Migration Agents Registration Authority (MARA) as Chair of a select committee. The task of the committee was to recommend which universities, throughout Australia, should be allowed to provide Graduate Certificate courses in Immigration law.

From 2005 to 2010 Brett was appointed to the Law Society’s Specialist Accreditation Committee (SAC) for immigration lawyers. The SAC sets standards for lawyers who wish to apply to become accredited as immigration specialists and examines and assesses applications for accreditation. Subsequently he sat on the Society’s Human Rights committee.

Brett has since 2003 been appointed by the Federal Court of Australia as a panel member of the RRT Legal Advice Scheme. In that capacity he has given advice to over 100 refugee applicants selected for him by the Court. As a result of the firm’s work, a number of those applicants succeeded in their court applications.

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