Conversion factors
We apply UK greenhouse gas conversion factors from DEFRA and DESNZ, selected appropriately for each data type and reporting period.
Alignment
- GHG Protocol aligned approach to categorisation and boundaries
- Transparent assumptions and limitation notes
- Consistent structure year to year where possible
Boundaries and scope
We define organisational boundaries and reporting scope clearly before calculations begin, including treatment of multi-site estates and entity structures.
Evidence-first delivery
- Source mapping, linking evidence to reported outputs
- Exceptions log for missing data, estimates, and substitutions
- Data quality grading
- Actions to improve completeness and control
What we do not do
- We do not provide assurance, verification, or certification
- We do not make carbon neutral or net zero certified claims
- We do not overstate certainty where estimates are required
Procurement-friendly outputs
Our structure is designed so procurement and finance teams can trace inputs to outputs quickly and defend the numbers internally.