s 21
(1) The application of a clinical commissioning group's seal must be authenticated by the signature of any person who has been authorised (generally or specially) for that purpose. (2) Any instrument which, if executed by an individual, would not need to be under seal may be executed on behalf of a clinical commissioning group by any person who has been authorised (generally or specially) for that purpose. (3) A document purporting to be duly executed under a clinical commissioning group's seal or to be signed on its behalf must be received in evidence and, unless the contrary is proven, taken to be so executed or signed.