Chapter 8 of the Public Contracts Regulations 2015 creates obligations in respect of contracts of central government authorities, sub-central contracting authorities or NHS Trusts which, due to their value, would not be otherwise regulated. These Regulations increase the value of a contract which triggers these obligations. This increase takes account of amendments made by the Public Procurement (Agreement on Government Procurement) (Thresholds) (Amendment) Regulations 2021 (S.I. 2021/1221), which provided that the threshold amounts were inclusive of VAT. This effectively lowered the threshold values and resulted in an increased burden for in-scope contracting authorities. The substituted amounts effectively reinstate the previous thresholds.