Thatcher Slater of Macclesfield is an independent practice of Chartered Surveyors established in 1994 by Trevor Thatcher who has been practicing as a Chartered Surveyor throughout Cheshire, South Manchester and the surrounding areas since 1975. Trevor Thatcher is a Fellow of the Royal Institution of Chartered Surveyors, a member of the Faculty of Party Wall Surveyors, the Pyramus and Thisbe Club for party wall surveyors and a member of the Independent Surveyors and Valuers Association.

The specialist field in which the company gives advice is the Party Wall etc. Act 1996 which was implemented in 1997 and applies to issues arising under the Act throughout England and Wales.