SI 2018/514 The Oil and Gas Authority (Offshore Petroleum) (Retention of Information and Samples) Regulations 2018 (link)
These Regulations set out requirements for the retention of petroleum-related information and samples (as defined in section 27(1) of the Energy Act 2016) by certain relevant persons (as defined in section 18(1) of that Act). The Regulations apply to information or samples which are held on the date the Regulations commence or which are acquired or created on or after that date (regulation 2).
Source: HMSO