evidence: London raised the most revenue (£194.3 billion) and the South East raised the second largest (£148.8 billion). Northern Ireland raised the lowest amount at £19.3 billion. These figures include a geographic share of North Sea oil and gas revenue. If a population-based share is used, the ranking remains unchanged for all regions, except that the South West exceeds Scotland. [...] In compiling these estimates, we gather source data from a wide range of external stakeholders and engage their expertise during the peer review part of our quality assurance work. We organise a biannual working group meeting with them to discuss subnational public sector finances statistics. These external stakeholders include governmental departments, such as HM Treasury and HM Revenue and Customs (HMRC), non-departmental bodies such as Office for Budget Responsibility, as well as the devolved administrations (Scottish Government, Welsh Government and Northern Ireland Executive).