The OGA have published a number of benchmarking reports about the UKCS which can be found at the links below.

Production Efficiency

Production Efficiency

Benchmarking of UKCS production efficiency and losses with interactive visuals

Unit Operating Costs

Analysis and benchmarking of Unit Operating Costs (UOC) and operating expenditure (OPEX) for UKCS fields

Recovery Factor Benchmarking

UKCS asset performance benchmarking using Recovery Factor data