This practical guidance relates to the Procurement Act 2023 regime As of 24 February 2025, the main provisions of the Procurement Act 2023 (PA 2023) are in force. Procurements begun on or after this date must be carried out under PA 2023 (where applicable), whereas those begun under the previous legislation (the Public Contracts Regulations 2015, SI 2015/102, the Utilities Contracts Regulations 2016, SI 2016/274, the Concession Contracts Regulations 2016, SI 2016/273, and the Defence and Security Public Contracts Regulations 2011, SI 2011/1848) must continue to be procured and managed under that legislation. This practical guidance focusses on public procurement under PA 2023. For practical guidance on the standstill period under the previous legislation, see Practice Note: The standstill period—pre-PA 2023 [Archived]. What is the standstill period? When a contracting authority reaches its decision on the award of a public contract subject to PA 2023, it must observe a standstill period before entering into the relevant contract, unless a specific exemption applies. A standstill period is not mandated, but may be observed voluntarily,