Dual Citizenship Australia UK and South Africa: What You Need to Know
If you are from the UK or South Africa and are thinking about becoming an Australian citizen, the dual citizenship question has a broadly positive answer for both groups — but the details differ in ways that matter.
The UK permits dual citizenship without restriction. South Africa technically requires prior permission before naturalising abroad, but the process and implications are different from what people often assume. Neither situation requires you to give up your original passport permanently, and for most people from both countries, holding both nationalities is achievable.
Dual Citizenship for UK Nationals Becoming Australian Citizens
The United Kingdom has no restriction on holding dual citizenship. When you become an Australian citizen, you retain full British citizenship automatically. There is nothing you need to do on the UK side — no forms to file, no permissions to request, no renunciation.
You can hold both a British and an Australian passport. You can travel on whichever is more convenient. The Australian passport currently provides visa-free or visa-on-arrival access to over 180 countries, while the British passport gives comparable access. Having both gives you flexibility — for example, using your British passport to enter the UK under citizen rights rather than visa rules.
In the 2024-25 financial year, 12,674 UK nationals became Australian citizens by conferral, making Britain the third-largest source of new Australian citizens. The vast majority hold both citizenships without any complication.
What UK nationals typically cite as reasons to become Australian citizens:
- Securing the right to remain in Australia permanently without visa renewal obligations
- Access to Australian government jobs and ADF roles that require citizenship
- Voting rights in Australian elections
- The ability to pass Australian citizenship to children born abroad
- No longer needing a Resident Return Visa when travelling internationally
If you are a UK national who has been a permanent resident in Australia for several years, the dual citizenship picture is simple: there is nothing stopping you on either side.
Dual Citizenship for South African Nationals Becoming Australian Citizens
South Africa's position is more nuanced. Under the South African Citizenship Act 88 of 1995, a South African citizen who voluntarily acquires citizenship of another country by naturalisation automatically forfeits South African citizenship — unless they have obtained prior written permission from the Minister of Home Affairs to retain it.
This sounds more alarming than it is in practice. The permission process exists and is used regularly. Here is how it works:
If you apply for permission before becoming an Australian citizen:
You apply to the South African Department of Home Affairs for permission to retain South African citizenship. This is done through the South African High Commission in Canberra or through a South African Consulate. If permission is granted, you can naturalise as an Australian citizen and keep your South African citizenship simultaneously.
If you already became an Australian citizen without getting permission:
This is the situation many South African-Australians find themselves in. Technically, South African citizenship was forfeited at the moment of naturalisation. However, the South African government does not actively track or enforce this — many people continue using their South African passports without issue. That said, doing so is technically not lawful under South African law.
If you want to formalise your dual status, you can still apply for permission after the fact. The South African Department of Home Affairs has processed retrospective applications. The process is not guaranteed to succeed, and the outcome can depend on the circumstances and the current policy environment, but it is an available path.
The practical picture for South Africans:
The 4,428 South African nationals who became Australian citizens in 2024-25 represent a community that overwhelmingly values Australian citizenship as an "insurance policy" — security against political and economic instability in South Africa, while maintaining ties to family, property, and potential return options.
If maintaining valid South African citizenship is important to you (for travel within Africa, for property ownership, or for family reasons), the right approach is to apply for permission before your Australian citizenship ceremony. This requires planning ahead — the permission process can take several months.
If it is not critical, many South African-Australians hold both passports informally without formalising the dual citizenship permission, accepting the technical legal ambiguity on the South African side.
The Australian Passport Benefit
For both UK and South African nationals, one concrete reason to pursue Australian citizenship (beyond security of residency) is passport power.
The Australian passport provides visa-free or visa-on-arrival access to over 180 countries. The British passport is broadly comparable. The South African passport provides notably fewer visa-free destinations — around 100 — meaning Australian citizenship represents a significant upgrade in international mobility for South African nationals.
For South African-Australians with family in other African countries or who travel frequently to destinations that require South Africans to obtain visas, the Australian passport can simplify travel considerably.
Free Download
Get the Australia Citizenship Guide — Quick-Start Checklist
Everything in this article as a printable checklist — plus action plans and reference guides you can start using today.
After Your Australian Citizenship Ceremony
For UK nationals: nothing required on the UK side. Apply for your Australian passport (there is a ~10-day system update period after your ceremony before you can successfully apply), enroll on the electoral roll, and you are done.
For South African nationals who obtained prior permission: notify the South African Department of Home Affairs of your Australian naturalisation and complete whatever reporting step they require.
For South African nationals who did not get prior permission: consider whether formalising dual citizenship is important to you, and if so, consult the South African High Commission in Canberra about retrospective applications.
The Australia Citizenship Guide covers the post-ceremony steps in detail, including the sequence of actions to take in the first 30 days after your ceremony — from passport applications to electoral enrolment to notifying Medicare and the ATO.
Get Your Free Australia Citizenship Guide — Quick-Start Checklist
Download the Australia Citizenship Guide — Quick-Start Checklist — a printable guide with checklists, scripts, and action plans you can start using today.