Here are some links to claim stats from insurers with the date that they were published. Click on the company name to access the claim stats:
Legal & General (2020)
British Friendly (2019 stats).
Holloway Friendly (Published 21st January 2020).
The Exeter (2020 stats published in April 2021).
Vitality (Published 17th June 2019)
Aviva (Published Summer 2021)
Dentists Provident (Published March 2021).