Penodwyd Mr John Gilbert, cyn Brif Weithredwr awdurdod lleol profiadol, yn gynghorydd allanol ar faterion corfforaethol er mwyn cynnal yr adolygiad cwmpasu cychwynnol. Y bwriad oedd iddo ddarparu barn annibynnol drylwyr ynghylch yr heriau sy'n wynebu Cyngor Bwrdeistref Sirol Merthyr Tudful ar hyn o bryd, a rhoi cyngor ynghylch y camau sydd angen eu cymryd i wneud newidiadau angenrheidiol, fel sylfaen ar gyfer cymorth a chyngor pellach.
Mr John Gilbert, a former experienced local authority Chief Executive, was appointed as an external adviser on corporate matters to undertake the scoping review in order to provide a rigorous independent perspective of Merthyr Tydfil County Borough Council's current challenges and advise on actions required to make the necessary changes which would inform further support and advice.