Company Information


Diurnal is a European, UK-headquartered specialty pharmaceutical company dedicated to developing hormone therapeutics to aid lifelong treatment for rare and chronic endocrine conditions, including Congenital Adrenal Hyperplasia, Adrenal Insufficiency, Hypogonadism and Hypothyroidism.

Country of Incorporation

The Company was incorporated in England and Wales on 28 October 2015 under the Act as Project Diurnal Limited with registered number 9846650. The Company was re-registered as a public limited company, Diurnal Group PLC, on 4th December, 2015. The Company is subject to the United Kingdom City Code on Takeovers and Mergers.

Registered Office and Corporate Headquarters

Cardiff MediCentre, Heath Park, Cardiff, CF14 4UJ, UK.

Tel: +44 (0)2920 682 069

Diurnal Limited (Company Number: 05237326) is registered in England & Wales. Registered office: Cardiff Medicentre, Heath Park, Cardiff CF14 4UJ, UK.