The Jisc OA Pathfinder project on ‘Administrative Efficiencies for OA Implementation’ from the GW4 institutions (Bath, Bristol, Cardiff and Exeter Universities) have published APC Vouchers and Discount Codes: Recommendations for Institutions and Publishers on their project blog.
The recommendations were derived from responses to a survey of UK HEIs on the benefits and issues of vouchers and discount codes.
The project would welcome any comments or feedback.