The Audit Committee comprises the Non-Executive Directors.  It was chaired by Rod Holdsworth throughout 2018 and  following his resignation is now chaired by John Grant. The  external auditor and the Executive Directors are regularly  invited to attend the meetings and the Committee also has  access to the external auditor’s advice without the presence of  the Executive Directors. The Committee met on five separate  occasions during the year.

During the year the Committee considered the adequacy and  effectiveness of the risk management and control systems of  the Group and requested updates to the Group’s corporate risk  register. It also reviewed the scope and results of the annual  external audit, its cost-effectiveness and the objectivity and  independence of the external auditor.

In 2018 a tender process took place to review the external  auditor and following the results of this process, a new  external auditor was appointed. The Committee has reviewed  the new auditor’s audit plan and considered the final Audit  report. In 2018 a landfill tax manager was appointed by the  Company in order to provide an internal audit process to ensure  landfill tax compliance.

The Committee monitored the integrity of the financial  statements of the Company, including its annual financial  statements for 2017 and other information included in the  2017 Annual Report, the interim financial statements for 2018,  all formal announcements relating to results and all significant  financial reporting issues and judgements contain therein. The  Committee have reviewed, in depth, the key assumptions  around goodwill and other non-current asset impairment  reviews, provisions, accounting for landfill tax assessments,  deferred tax asset recognition, key assumptions around  provisioning and adoption of the going concern assumption.

During the year the Audit Committee reviewed its own  performance, its constitution and its terms of reference  to ensure it was operating at maximum effectiveness.  Recommendations were made to the Board for any changes it  considered necessary.