[arctangent]

I'm the tech lead for the NHS website (www.nhs.uk) and I oversee the team who are building this frontend library.

Your comment is a good explanation of how things work.

My employer, NHS Digital, is working on this frontend library as a way to spread good practice throughout the federated health and care system you describe.

In short, we spend money doing the research on how best to provide information to users/patients and then we promote the uptake of the technology we develop to best satisfy them - with the overall goal of improving self-care and reducing the need for costly GP appointments and hospital visits.