London-California Divorce Services
Serving London–California families in cross-border divorce and all related cases
When It’s All on the Line, This Is Who Leads the Room
Alphonse F. Provinziano is a distinguished international family law attorney based in Beverly Hills, California.
He is a Fellow of the International Academy of Family Lawyers (IAFL) and a Certified Family Law Specialist (CFLS), certified by the State Bar of California, Board of Legal Specialization.
These credentials reflect independent vetting, including peer review and demonstrated experience in complex family law cases.
He regularly serves as U.S. counsel in cross-border divorce, custody, child and spousal support maintenance, and enforcement cases involving California jurisdiction, including Hague Convention and international property disputes.
- Fellow, International Academy of Family Lawyers (IAFL)
- President-Elect, Beverly Hills Bar Association
- Super Lawyers: 2021–2026
- Avvo Rating: 10.0 (Superb)
- Former Prosecutor
With over 2,000 cases and 220+ trials, he brings seasoned courtroom strategy to high-stakes international cases involving complex assets, reputation risk, executives, and public figures.
He frequently speaks and moderates to top family law attorneys in both the U.S and at global family law conferences.
Meet Alphonse Provinziano
Managing Partner & Senior Trial Attorney
When It’s All on the Line, This Is Who Leads the Room
Meet Alphonse Provinziano
Managing Partner & Senior Trial Attorney
Alphonse F. Provinziano is a distinguished international family law attorney based in Beverly Hills, California. He is a Fellow of the International Academy of Family Lawyers (IAFL) and a Certified Family Law Specialist (CFLS), certified by the State Bar of California, Board of Legal Specialization. These credentials reflect independent vetting, including peer review and demonstrated experience in complex family law cases.
He regularly serves as U.S. counsel in cross-border divorce, custody, child and spousal support maintenance, and enforcement cases involving California jurisdiction, including Hague Convention and international property disputes.
- Fellow, International Academy of Family Lawyers (IAFL)
- President-Elect, Beverly Hills Bar Association
- Super Lawyers: 2021–2026
- Avvo Rating: 10.0 (Superb)
- Former Prosecutor
With over 2,000 cases and 220+ trials, he brings seasoned courtroom strategy to high-stakes international cases involving complex assets, reputation risk, executives, and public figures.
He frequently speaks and moderates to top family law attorneys in both the U.S and at global family law conferences.
Living across two worlds comes with its own challenges. You’re dealing with two court systems, two sets of legal rules, and two very different views on parenting, money, and what fairness looks like when a relationship ends. The wrong first move can lock you into a jurisdiction that doesn’t favor your outcome.
Provinziano and Associates is a Beverly Hills international family law firm specializing in UK-California divorce matters, with particular focus on London. We represent parents, executives, and entrepreneurs whose children, assets, and obligations span both countries.
The firm is led by Alphonse F. Provinziano, a Certified Family Law Specialist recognized by the State Bar of California Board of Legal Specialization, and a Fellow of the International Academy of Family Lawyers (IAFL).
From Hague Convention child abduction and international relocation disputes to cross-border support enforcement and recognition of foreign divorce and financial orders, we build a coordinated strategy across both systems for your children and your finances.
For London-California family law cases, we act as your California lawyers. When UK court steps are needed, we work with trusted London solicitors and barristers who handle the UK family law side.
Who We Serve
We represent London-based clients with California ties, UK citizens living in California, and expats and dual nationals with cross-border family issues, such as:
- Divorce or separation involving property or income in both the UK and California
- Custody, relocation, or child support for dual-national children
- Disputes over which country’s court should decide the case
- Concerns that the wrong jurisdiction could lead to unfair or irreversible outcomes
We also work with English-speaking clients from select British Commonwealth jurisdictions, such as Bermuda, the British Virgin Islands, and the Cayman Islands, when their family or financial issues connect to California or the United Kingdom.
If any of these apply, get advice before taking the next step:
- A child may travel, relocate, change schools, or be kept abroad
- Either spouse may file first in the UK or California
- There is property, income, or a business in both places
- There is an existing order that needs to work across borders
We Speak Your Language
International family matters often cross language lines.
Our attorneys primarily work in English, but we offer support in French, Italian, Spanish, Mandarin, Cantonese, Farsi, and Russian.
If you prefer to communicate in another language, contact us and we’ll confirm what’s available for your situation.
Quick California primer for UK clients
A few California basics that often surprise UK-based clients:
- Residency: To file for divorce in California, one spouse generally must live in California for 6 months and in the county for 3 months.
- Financial disclosure: Expect detailed disclosure of income, assets, debts, and spending.
- Custody: California custody is led by the welfare, stability, and best interests of the child.
- Property and support: Marital property is often treated as community property, and support often starts with guideline calculations.
- Divorce waiting period: You cannot be legally divorced until at least 6 months.
How Our London-California International Family Law Lawyers Help You
We handle international family law cases from start to finish, whether you’re just thinking about divorce, already in court, or dealing with orders that no longer work and need modification.
Forum Choice: Which Country Should Deal With Your Case
Forum choice is deciding which court will deal with your case. Sometimes, only one court has the authority to act. In other cases, different courts may handle different parts of the case, for example, divorce in one country and child arrangements in the other.
We help you assess the risks early, in coordination with trusted UK counsel, so your first steps align with the outcome you want, and you do not get pulled into conflicting proceedings.
International Divorce Attorneys for London-California Cases
Our London-California divorce attorneys represent clients from initial filings through final judgment, and we can step in mid-case when strategy needs to be reset.
We take cases from early negotiation through trial, if it comes to that, including high-stakes matters involving prenups or postnups, significant assets, and privacy-sensitive clients.
Spousal Support (Alimony) and Maintenance
We represent clients seeking, contesting, or modifying spousal support. That includes temporary support during the case and longer-term maintenance after final judgment.
For those seeking support, we show the court why it’s justified. For those defending against claims, we challenge inflated numbers and push for realistic, sustainable terms.
Child Support Across the UK & California
Cross-border child support must make sense for both households and hold up under the laws of both countries.
We help parents ask for, challenge, or change support orders when income, living costs, or a child’s needs shift across countries. That includes dealing with hidden income, complex pay like bonuses or equity, and long support histories that span both systems.
Children, Parental Rights, and the Hague Convention
For most parents, nothing matters more than their children. We handle custody and parentage cases involving London and California, including temporary, emergency, and long-term orders.
Child Custody Between London and California — We represent parents with cross-border disputes about where a child lives, who makes key decisions, and how parenting time is shared.
The Hague Convention and Child Abduction — If a child is taken or kept without proper consent, we represent parents seeking a return under the Hague Convention, as well as those defending against return applications.
Relocation and International Move-Aways — If a parent wants to move a child to another country or state, or stop a move, we step in early. We advise parents before relocation plans are set and handle international move-away cases on either side of the Atlantic.
Marital Property and Asset Division
We help international families divide complex cross-border asset portfolios, whether that means homes in both countries, complex investments, or high-value business interests.
Our clients include business owners, founders, partners in professional practices, public figures, and heirs, often with pensions, crypto assets, investment portfolios, stock and option grants, and real estate in multiple jurisdictions.
Business Valuation
We map out what exists, where it is held, and what it is worth, working with valuation experts and forensic accountants when needed to build a detailed financial picture grounded in evidence.
Asset Tracing & Hidden Assets
If money has been moved or hidden between accounts, companies, or countries, we work with experts to trace assets through companies, trusts, and overseas holdings, so that the pool for division reflects what is really there.
Enforcement and Cross-Border Orders
A court order only matters if it can be enforced where people, assets, and income actually are. We help enforce California orders abroad and foreign orders here.
We also manage the practical details: certified translations, apostilles, service of process, and coordination across legal teams.
Prenuptial and Postnuptial Agreements
A prenup or postnup is often the main tool for setting expectations about property and support. We draft, negotiate, and review these agreements and update existing documents when careers, children, or holdings have changed.
Where needed, we arrange mirror agreements or related orders so that what you agree on paper is more likely to be recognized in both countries.
When It’s All on the Line, This Is Who Leads the Room
Alphonse F. Provinziano is a distinguished international family law attorney based in Beverly Hills, California.
He is a Fellow of the International Academy of Family Lawyers (IAFL) and a Certified Family Law Specialist (CFLS), certified by the State Bar of California, Board of Legal Specialization.
These credentials reflect independent vetting, including peer review and demonstrated experience in complex family law cases.
He regularly serves as U.S. counsel in cross-border divorce, custody, child and spousal support maintenance, and enforcement cases involving California jurisdiction, including Hague Convention and international property disputes.
- Fellow, International Academy of Family Lawyers (IAFL)
- President-Elect, Beverly Hills Bar Association
- Super Lawyers: 2021–2026
- Avvo Rating: 10.0 (Superb)
- Former Prosecutor
With over 2,000 cases and 220+ trials, he brings seasoned courtroom strategy to high-stakes international cases involving complex assets, reputation risk, executives, and public figures.
He frequently speaks and moderates to top family law attorneys in both the U.S and at global family law conferences.
Meet Alphonse Provinziano
Managing Partner & Senior Trial Attorney
When It’s All on the Line, This Is Who Leads the Room
Meet Alphonse Provinziano
Managing Partner & Senior Trial Attorney
Alphonse F. Provinziano is a distinguished international family law attorney based in Beverly Hills, California. He is a Fellow of the International Academy of Family Lawyers (IAFL) and a Certified Family Law Specialist (CFLS), certified by the State Bar of California, Board of Legal Specialization. These credentials reflect independent vetting, including peer review and demonstrated experience in complex family law cases.
He regularly serves as U.S. counsel in cross-border divorce, custody, child and spousal support maintenance, and enforcement cases involving California jurisdiction, including Hague Convention and international property disputes.
- Fellow, International Academy of Family Lawyers (IAFL)
- President-Elect, Beverly Hills Bar Association
- Super Lawyers: 2021–2026
- Avvo Rating: 10.0 (Superb)
- Former Prosecutor
With over 2,000 cases and 220+ trials, he brings seasoned courtroom strategy to high-stakes international cases involving complex assets, reputation risk, executives, and public figures.
He frequently speaks and moderates to top family law attorneys in both the U.S and at global family law conferences.
How We Work With London Solicitors and Barristers, and Across the UK
We do not replace your UK legal team. We work alongside them. London solicitors and barristers from a small circle of established international family law practices bring us in as California counsel when a UK matter touches California, and we coordinate the same way when a California matter needs London-based UK counsel.
We handle the California side while your UK team handles UK law and UK court steps, so you are not stuck managing two firms on your own.
When the wider picture includes linked Commonwealth jurisdictions, we can also coordinate with English-speaking counsel in places such as Bermuda, the British Virgin Islands, and the Cayman Islands.
Here’s How Our London-California Family Law Firm Works With You
Your initial case evaluation and consultation happen over encrypted video, from a private location of your choice.
Schedule a private case evaluation
After you hire us: Get a tailored legal plan
Resolution through settlement or trial
Many firms handle some international family law issues. Our practice is built around it.
The Provinziano & Associates Difference
Why Clients With London-California Matters Choose Our Firm
Certified and Recognized International Family Law Leadership
Your case is led by a California Certified Family Law Specialist who is also a Fellow of the International Academy of Family Lawyers. That means your strategy is shaped by someone who focuses on family law every day and works regularly with lawyers in England and Wales and other UK jurisdictions.
A California Partner Trusted by London Family Law Firms
When a London family law matter touches California, UK lawyers often need someone on the ground here who can move quickly and keep strategy consistent. London solicitors and barristers, from a small circle of established international family law practices, regularly bring our team in to handle the California side of international family law.
Built for High-Asset Divorce and Global Enforcement
We regularly deal with complex property portfolios. From valuation and division to hidden assets, support arrears, and mirror orders, we think about enforceability and long-term impact from the start, not just the day a judgment is signed.
Discreet Counsel for High-Profile International Clients
Many of our clients are business owners, professionals, public figures, and athletes. We handle sensitive matters as quietly and privately as the law allows, and coordinate with trusted PR and security advisors so that your legal strategy does not come at the expense of your privacy.
Collaboration Network of Cross-Border Professionals
International cases often raise questions that sit outside pure family law. We draw on a circle of wealth managers, estate planning lawyers, financial planners, tax specialists, business valuation experts, and forensic accountants in both countries and coordinate across your existing advisors so nothing falls through the cracks.
Litigation & Appeals Experience in Complex Family Law
Cases don’t always settle. Our team has represented clients in thousands of court proceedings and has handled appeals and post-judgment modifications in difficult support, custody, and property cases, so the skill set for a hard-fought hearing is already in place if you need it.
Staying Ahead of Cross-Border Legal Strategy
We don't just handle UK-California cases, we help shape how they're approached. Alphonse Provinziano speaks at international family law conferences and collaborates regularly with overseas counsel, keeping our strategies current with how these cases are actually being decided.
Compassionate Support Throughout Your Case
Family law cases are personal and can feel draining. In court, we are firm and strategic. With clients, we work to be steady and attentive. We explain each step in plain language, prepare you for hearings and deadlines, and make space for the stress that comes with decisions about children, money, and reputation.
Talk to a Beverly Hills International Family Law Attorney Today
If your life spans California and the United Kingdom, you need a legal strategy that bridges both systems.
We represent London residents with assets, children, or legal matters in California, and California residents with obligations or connections in the UK, including expats, dual nationals, and cross-border families in high-stakes divorce and cross-border family law enforcement matters.
Whether you’re in London or elsewhere in the UK, we coordinate directly with trusted solicitors and barristers while managing proceedings here in California.
Based in Beverly Hills, we appear in family courts across Los Angeles, Orange County, San Diego, and San Francisco, offering discreet, strategic counsel for clients navigating international family law. That gives you experienced California representation.
Because timing matters in two-country cases, early advice in both countries helps you make choices that protect your rights, your finances, and your long-term goals.
Start with a confidential case review to map your next steps.
FAQs: International Family Law Attorneys for the UK and California
Do I need both a California attorney and a London-based solicitor?
Can a UK divorce be recognized in California?
Can a California parenting order be enforced in the UK?
What if both California and the UK can deal with the case?
What if I already have an order in one country?
Recent International Engagements
