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Company

Simkins

Position

Partner

Head of department

Index

Family Lawyers

Location

London

Advice type

Alternative dispute resolution

Big-money cases

Cross-border

Divorces

Financial remedies

High-profile cases

High-value cases

International cases

Prenuptial and postnuptial agreements

Same-sex couples

Client type

Celebrities

Billionaires

Entrepreneurs

High-profile clients

HNW

Trusts

Sportspeople

Sector Focus

Legal Advisory Services

Geographical focus

France

Germany

Italy

United Kingdom

United States

Deborah Jeff

Spear’s Review

Simkins partner Deborah Jeff’s career has been characterised by major family law cases, including working ‘with two trust funds in the Isle of Man worth £13 million, and on a well-known singer/songwriter’s prenup’.

Noted for the law-changing case of SS v NS [2014], which shone a light on the needs-based assessment of maintenance payments to spouses, Jeff specialises in complex financial disputes between divorcing and cohabiting couples, often with offshore elements and intricate taxation issues. She has advised a wealthy Austrian property developer on a postnuptial agreement to protect £340 million in wealth, for example, as well as on a prenuptial agreement where there were inherited assets of approximately £1 billion.

She also has considerable experience with issues relating to children, and can offer support and insight around how divorce can affect the mental health of clients.

Adviser Profile

‘My work over recent years has increasingly been for public figures and those in the music and entertainment industry, particularly for clients fighting to protect their wealth at the outset of a relationship,’ says Deborah Jeff. 

Jeff’s high- and ultra-high-net-worth practice has grown exponentially, most recently with client interests between the UK, US, Switzerland, Germany and Luxembourg. That growth saw Jeff protecting a client’s assets of £340 million by way of a post-nuptial agreement. 

Respected by accountants and mental health professionals who entrust her with their most delicate and complex client needs, clients warm to her down-to-earth manner while respecting her attention to detail and ability to strategise a case from the outset.

Rank: Top Recommended

Top Recommended 2025, Family Lawyers

Phone

+44 20 7874 5655

Address

Lynton House, 7-12 Tavistock Square, London, WC1H 9LT, United Kingdom

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