Mandie has practised in the field of immigration, nationality, and human rights law for over 20 years. She has been a Head of Department and Partner in top 100 law firms, including two of the Big 4, and has been recognised for her work in the Legal 500. She is an experienced trainer, lecturing at the University of Law and various commercial and educational organisations, and she regularly advises businesses about issues such as the prevention of illegal working and sponsor licensing. She also helps individuals with their personal immigration matters and is often praised for finding practical solutions to complex legal problems.