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Assurances investigation

The CMI investigates the claims experience of policyholders with term and whole of life assurances issued by UK life offices.

Brief history

Until November 2013, mortality under assurance contracts was covered by the life office mortality investigation and critical illness experience was covered by the critical illness investigation. Since that date, both have been covered by the assurances investigation.


The CMI currently adopts a flexible approach to the data it collects – the data requirements are described in Data submissions to the CMI Assurances investigation (April 2018).

Methodology and Results

Contributing offices receive results in respect of the business for which they have submitted data. Aggregate ‘all offices’ results are also produced.

The latest all-offices results that have been issued are:

These results are each available in spreadsheets alongside the relevant paper. Each working paper contains commentary on the data, the methodology used in the results and commentary on the results.

Mortality and critical illness tables

The “08” Series assurances tables were issued alongside Working Paper 94 comprising accelerated critical illness tables based on experience in the years 2007-2010 and term mortality tables based on the corresponding dataset.

Earlier tables are available under the life office mortality investigation and the critical illness investigation.

Contact Details

If you have any questions about the CMI please email