Hurricane Energy plc provides an update on production guidance from the Lancaster field, which takes into account additional production and pressure data gathered since the annual maintenance shutdown in July 2021. On 30 April 2021, the Company provided annual production guidance for the full year 2021 of 8,500 - 10,500 bopd. The Company continues to forecast that average production for the year is expected to remain within this range. This annual guidance is based on an FPSO production uptime assumption of 90% and production from the P6 well alone on artificial lift via ESP. The production uptime assumption of 90% includes the impact of the annual maintenance shutdown, evenly spread across the year. Management's production guidance from the Lancaster field for the six month period 1 October 2021 to 31 March 2022 (the "Period") is 8,500 - 10,000 bopd, which is based on an improved FPSO production uptime assumption of 96.5% and production from the P6 well alone on artificial lift via ESP. The increase in the uptime assumption is a combination of there being no planned maintenance shutdowns anticipated in the Period, and reflecting the excellent production uptime that has been seen on the FPSO to date. The guidance for the Period is slightly lower than the average for the full year 2021 due to the expected gradual production decline from the reservoir over time, partially offset by the higher FPSO uptime assumption.