Joshua Flack

FIA

Consultant

London, UK

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Josh Flack is a consulting actuary in Milliman’s London Property and Casualty Practice. He joined the firm in 2020.

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Experience

Josh’s experience covers a range of actuarial areas for UK and Gibraltar insurers gained through both in-house roles and client projects. His expertise includes:

Reserving Reviews: Leading reserving work across a range of classes and companies, including Personal and Commercial lines, as well as Lloyd’s, with a particular focus on motor insurance.
Reserving Processes: Designing and building reserving processes, including management of transformation projects. Experience across a range of software solutions and implementing new data sources.
Solvency II: Calculating and peer reviewing technical provisions and Standard Formula SCRs, drafting AFRs, and contributing to multiple successful USP applications.
M&A Due Diligence: Performing reserving exercises to contribute to M&A due diligence work, with the ability to prioritise focus on material classes due to tight deadlines. Experience in engaging with actuarial teams and a wider team of professionals on both buy and sell sides.
Internal Model Validation: Providing validation support for Lloyd’s syndicates capital models.
Pricing: Developing pricing models for motor and home insurance using GLMs, including modelling insurance factors and geospatial factors, and utilising external data such as membership and credit data.
Motor Insurance: Conducting research on motor insurance topics, including presentation on the UK whiplash reforms to large risk actuarial audiences.

Josh is experienced in a range of specialist actuarial software, including Arius, ResQ, Emblem, and Akur8. He also has experience using SQL for data manipulation.Before joining Milliman he held roles across reserving, capital, and pricing for Newline, Allianz, and The Co-operative Insurance.

Professional Designations

Fellow, Institute and Faculty of Actuaries (2019)

Education

BSc (Hons) Mathematics, University of Manchester (2012)

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Publications

Read their latest work

Article

Will the UK property insurance market experience a subsidence event during 2025?

29 October 2025 - by Jeff Courchene, Joshua Flack

With conditions ripe for a 2025 UK subsidence event, we look at ways property insurers can better prepare, including use of the soil moisture deficit.

Article

Driving for profit: A view of the UK motor insurance market 2022

05 September 2023 - by Derek Newton, Ian Penfold, Joshua Flack, Paige Yallop

Data from 39 motor insurers in the UK shows slightly higher premiums and gross claims costs for 2022, according to Solvency II reports.

Joshua Flack

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Experience

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Read their latest work

Will the UK property insurance market experience a subsidence event during 2025?

Driving for profit: A view of the UK motor insurance market 2022

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Joshua Flack

Experience

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