Independent Strategic Analysis●  Geopolitics · Energy · Sovereign Risk
PAUL GARDNER BROOKStrategic Analysis
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About the Author

Paul Gardner Brook

Independent geopolitics, socioeconomics, technology and strategic-risk analyst, and a former senior investment banker. Known professionally as Gardner Brook.

Paul Gardner Brook

Paul Gardner Brook writes on the forces reshaping the global order — the intersection of the energy transition, sovereign and geopolitical risk, ESG frameworks and global capital markets. His work is grounded in primary sources, argued from evidence, and transparent about its assumptions and limits.

His career spans three decades in international finance across Asia, Europe and Australia. After military service and a Bachelor of Business, he began his career in corporate banking with the National Australia Bank — recruited in September 1994 as a Business Banking Analyst at 271 Collins Street, Melbourne, one of eight selected from more than 980 applicants — and, in his mid-twenties, founded his own advisory consultancy — retained by The Atlantic Philanthropies (Chuck Feeney AC) and the InterPacific Group (Ron Clarke AO, MBE) to advise on philanthropic, environmental and property-linked investments. That work led to a role as Head of Sales for Exelerate, Barclays' pilot structured working-capital programme.

His institutional career then progressed through Singapore — as Associate Director, Distressed Debt Advisory at Presidio Capital — to Lehman Brothers, where he was a Senior Vice President in the Asia Special Situations Group, and, following Nomura's acquisition of Lehman's Asia-Pacific business in 2008, to Nomura Holdings as Managing Director, Fixed Income. (Nomura's acquisition of Lehman's Asia business, 2008)

Before finance, he served in the Australian Army with the Royal Australian Regiment. Today he publishes independent analysis and long-form essays, and produces video commentary, on geopolitics, energy and strategic risk. His public record as a witness in Australian corruption proceedings — where his evidence was repeatedly preferred by the courts — is set out in full, with sources, on The Record.

“He was very effective and very good.” Ron Clarke AO, MBE — seventeen-time world record holder, Olympic medallist and Mayor of the Gold Coast 2004–2012 — speaking to the Sydney Morning Herald, 2012, on Mr Brook's work on his winning 2004 mayoral campaign

Explore the analysis

Background

Paul Gardner Brook married Renee Bauer in Brisbane on 16 December 1995, in the gardens of New Farm Park; the marriage ended on 22 February 1999. Renee is today known as Renee Breeze.

He married Alexandra Louise Marks, a Brisbane barrister, in January 2001. Their daughters are Lauren Alexandra Brook and Madeleine Poppy Brook. Paul and Alexandra divorced in 2008.

The photographs below run from recruit training at Kapooka in 1992 to the witness box of the Obeid criminal trial and the ABC’s Four Corners in 2021 — a winning mayoral campaign, Lehman Brothers in Asia, and residence in Monaco-Beausoleil, corroborated by the baptism register of St Paul’s Church, Monaco, along the way.

Family

Renee Bauer and Paul Gardner Brook — wedding ceremony, New Farm Park, Brisbane, 16 December 1995
Renee Bauer and Paul Gardner Brook — wedding ceremony, New Farm Park, Brisbane, 16 December 1995
Renee Bauer before the wedding, 16 December 1995
Renee Bauer before the wedding, 16 December 1995
Lauren Brook and Madeleine Brook with their father, Paul Gardner Brook
Lauren Brook and Madeleine Brook with their father, Paul Gardner Brook
Alexandra Marks and Paul Gardner Brook with their daughter Lauren Brook, 16 March 2003
Alexandra Marks and Paul Gardner Brook with their daughter Lauren Brook, 16 March 2003
Alexandra Louise Marks, Lauren Alexandra Brook, Madeleine Poppy Brook and Paul Gardner Brook
Alexandra Louise Marks, Lauren Alexandra Brook, Madeleine Poppy Brook and Paul Gardner Brook
Madeleine Brook, Paul Gardner Brook and Lauren Brook
Madeleine Brook, Paul Gardner Brook and Lauren Brook

A Life on the Record

Paul Gardner Brook with Tanya Halleday — 1st Recruit Training Battalion, Kapooka, 1992
Paul Gardner Brook with Tanya Halleday — 1st Recruit Training Battalion, Kapooka, 1992
Paul Gardner Brook on Australian TV, 1992 — enlisting in the Army

Enlisting in the Australian Army

Ten News archive · 1992 · 7,000+ views
Lehman Brothers employee ID and business card — Gardner Brook, Senior Vice President, Asia Special Situations Group, Lehman Brothers Australia
Lehman Brothers employee ID and business card — Gardner Brook, Senior Vice President, Asia Special Situations Group, Lehman Brothers Australia
Paul Gardner Brook at the School of Infantry, Royal Australian Regiment, aged 19
Paul Gardner Brook at the School of Infantry, Royal Australian Regiment, aged 19
“Clarke gets the numbers” — The Sunday Mail, 28 March 2004, the morning after Ron Clarke’s election win. Gardner Brook pictured, and named as “former army officer turned investment banker” on Ron Clarke’s winning Gold Coast mayoral campaign team
“Clarke gets the numbers” — The Sunday Mail, 28 March 2004, the morning after Ron Clarke’s election win. Gardner Brook pictured, and named as “former army officer turned investment banker” on Ron Clarke’s winning Gold Coast mayoral campaign team
Paul Gardner Brook in Amsterdam, 26 December 2006
Paul Gardner Brook in Amsterdam, 26 December 2006
Paul Gardner Brook, April 2008
Paul Gardner Brook, April 2008
Baptism register, St Paul’s Church, Monaco (Diocese in Europe), 2009 — Mr Brook’s own entry, cropped from the page to protect other families’ entries; then resident on Boulevard de la République, Beausoleil — 140 metres from the Monaco border
Baptism register, St Paul’s Church, Monaco (Diocese in Europe), 2009 — Mr Brook’s own entry, cropped from the page to protect other families’ entries; then resident on Boulevard de la République, Beausoleil — 140 metres from the Monaco border
Paul Gardner Brook, 2011
Paul Gardner Brook, 2011
Mine site inspection, the Philippines
Mine site inspection, the Philippines
Paul Gardner Brook in Bryant Park, Manhattan, 2017
Paul Gardner Brook in Bryant Park, Manhattan, 2017
End of giving evidence in the Obeid criminal trial, 29 October 2020
End of giving evidence in the Obeid criminal trial, 29 October 2020
The ABC Four Corners interview set-up — “Obeid Inc.”, 2021
The ABC Four Corners interview set-up — “Obeid Inc.”, 2021
Questions & Answers

The record, in brief

Who is Paul Gardner Brook?

Paul Gardner Brook (known professionally as Gardner Brook) is an independent strategic-risk and geopolitics analyst and a former senior investment banker — Senior Vice President at Lehman Brothers and Managing Director, Fixed Income at Nomura. He writes on geopolitics, energy, sovereign risk and global capital markets.

What was his role in the NSW ICAC “Operation Jasper” inquiry?

He was a cooperating witness — never a defendant — whose evidence the courts repeatedly preferred over that of the people he testified against.

Was Gardner Brook ever charged with any offence?

No. He was a witness, not an accused, and holds a clean criminal record.

Did the courts accept his evidence?

Yes. The NSW ICAC (2013) found his evidence “designed to be generally honest and accurate”; the Federal Court (2018) found it “essentially reliable” and “entirely consistent with the documentary record” [2018] FCA 1019; and the convictions it supported were unanimously upheld by the High Court of Australia in 2026 [2026] HCA 1.

What happened to the people he gave evidence against?

Mr Brook was the cooperating witness in the proceedings — never an accused, and never charged. It was the people he gave evidence against who were convicted and jailed [2021] NSWSC 1343; the High Court of Australia unanimously upheld those convictions in 2026 [2026] HCA 1.