Welcome to pjlee.net

The personal professional site of Patrick Lee, experienced software engineer, data science/big data/AI consultant, actuary (FIA 1990 to Sep 2020), and manager.

Technology AI/Data Actuarial

Recent Posts

UK Government Finances: The Big Picture an Actuary Would Want to See

by Patrick Lee on 16 Mar 2026 in categories actuarial pensions with tags AI economics productivity

An actuarial lens on the UK's Whole of Government Accounts 2023-24: £5 trillion of liabilities, £1.3 trillion of unfunded pensions, and a balance sheet with less margin than ever. Revenue, expenditure, the pension iceberg, PFI, migration, and what it all looks like scaled to a household earning £50,000.

The Politics Actuary #8: Holiday Risk Assessment

by Patrick Lee on 14 Mar 2026 in categories actuarial with tags cartoons

The Politics Actuary #8 — from the Actuaries in the Wild theme. Some people browse TripAdvisor. Patrick builds a risk matrix.

The Politics Actuary #7: Excel Relapse

by Patrick Lee on 10 Mar 2026 in categories actuarial with tags AI cartoons

The Politics Actuary #7 — from the AI & the Actuary theme. Management wanted AI-first. Not everyone got the memo.

Discount Rates Tripled. Liabilities Halved. So Why Are Some Schemes Still In Deficit?

by Patrick Lee on 09 Mar 2026 in categories actuarial pensions with tags AI data productivity

I expanded my IAS 19 analysis to 12 FTSE companies and derived a metric from public OCI data that reveals how well each scheme's assets track its liabilities: the hedge ratio. Five companies show ratios above 100%, consistent with leveraged LDI. Investment strategies have shifted dramatically since the 2022 gilt crisis — and the disclosure gap around leverage is a problem.

The Politics Actuary #6: Long-Term Assumption

by Patrick Lee on 06 Mar 2026 in categories actuarial with tags cartoons

The Politics Actuary #6 — the first from the Assumption Theatre theme. The gap between the whiteboard and the world outside the window.

I Used AI to Compare Pension Disclosures Across 4 FTSE Companies. Here's What I Found.

by Patrick Lee on 03 Mar 2026 in categories actuarial pensions with tags AI economics productivity

Four FTSE companies, 20+ data points each, one hour. AI-extracted IAS 19 pension disclosures from BT Group, BAE Systems, Tesco and BP — compared side by side.

The Politics Actuary #5 - Define "Everyone"

by Patrick Lee on 02 Mar 2026 in categories actuarial with tags cartoons

Cartoon #5 in the series. When an eleven-year-old deploys the "everyone has one" argument at the dinner table, most parents cave. An actuarial parent reaches for the notepad.

The Politics Actuary #4 — Transparency Request

by Patrick Lee on 02 Mar 2026 in categories actuarial with tags cartoons

The Politics Actuary is a weekly cartoon about what happens when an actuary watches the news, reads the small print, and can't keep quiet about it. Set in a fictional household — a dad who can't switch off his professional brain, a family who've learned to live with it, and ...

The Politics Actuary #3: Prompt Engineering

by Patrick Lee on 02 Mar 2026 in categories actuarial with tags cartoons

The Politics Actuary is a weekly single-panel cartoon about actuaries, politics, the profession, everyday life, and the absurdities of overregulation. It follows a fictional household: a dad who can't switch off his professional brain, a family who've learned to live with it, and an inexplicable pet crocodile. Any resemblance to ...

The Politics Actuary #2 — Y-Axis Trick

by Patrick Lee on 02 Mar 2026 in categories actuarial with tags cartoons

The Politics Actuary is a weekly cartoon about what happens when an actuary watches the news, reads the small print, and can't keep quiet about it. Set in a fictional household — a dad who can't switch off his professional brain, a family who've learned to live with it, and ...