Mettrick's source all their lamb from within the High Peak. The farmers who supply Mettrick's with lamb are:
Michael Wynne - Padfield - 2 miles from Glossop
Sally Hodgson - Chunal - 3 miles from Glossop
Mike Salisbury - Hayfield - 4 miles from Glossop
All these farmers can be seen with their Peak District Environmental Quality Mark. This award is run by the Peak National Park and is only given to farmers who are conserving the flora, fauna, archaeology and architecture of the Peak District.