The Government Says

Proposed implementation of Fixed Price Certificates into the UK-wide RO schemes

Proposed implementation of Fixed Price Certificates into the UK-wide RO schemes
Local copy of FPC-consultation-document.pdf

https://www.gov.uk/government/consultations/proposed-implementation-of-fixed-price-certificates-into-the-uk-wide-ro-schemes

seen at 10:33, 3 November in Policy papers and consultations.