Information on certification is divided by country to reflect the different regulations prevailing in England, Wales, Northern Ireland and those in Scotland.

In England, Wales and Northern Ireland the certification criteria are the PAS110:2010, the Quality Protocol (ADQP) and the BCS Scheme Rules.  For Biogas plants in Scotland the certification criteria are the PAS110:110, the Additional Scheme Rules for Scotland (ASRS) and the BCS Scheme Rules.  The Checklist which inspectors will use when inspecting your facility can be found under the Certifying Bodies section on this website