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:
British Friendly (Published 15th January 2018).
Holloway Friendly (Published 3rd January 2018).
The Exeter (Published 21st March 2018).
Vitality (Published 31 May 2018)
Aviva (Published June 2018)
Dentists Provident (Published June 2018).