12.—(1) The Secretary of State must—
(a)by 1st May 2021 and once every four years from that date prepare or update a spatially disaggregated inventory of emissions occurring in the United Kingdom and an inventory of large point sources for the pollutants specified in Table 1 of Schedule 4, for the calendar year before the previous year;
(b)by 15th March every year prepare or update an informative inventory report for the pollutants specified in Table 2 of Schedule 4, for the calendar year before the previous calendar year.
(2) The inventory and report referred to in paragraph (1) must be prepared or updated—
(a)in accordance with the methodologies in the EMEP Reporting Guidelines and EMEP/EEA Guidebook;
(b)in accordance with Parts 1 and 3 of Annex 4 to the Directive.
(3) The Secretary of State must take appropriate steps to ensure that the inventory and report referred to in paragraph (1) are made available to the public.
13. The National Emission Ceilings Regulations 2002(1) are revoked.