The Mansell discovery is located in licence P.2448 in UKCS Block 3/8g south and east of the Ninian and Columba fields. Mansell was discovered by well 3/8b-10, drilled by BP in 1985 and following successful appraisal was developed as a subsea tieback to the Ninian South Platform and produced between 1992 and 1995 (Field was then named as Staffa). The field was shut in 1995 following waxing-up of the flowline and decomissioned. The Mansell field has contingent resources of up to 16 mmboe. Studies are ongoing to determine the feasibility and timing of a redevelopment.