English: APT
Welsh: Cymdeithas Ymddiriedolaethau Cadwraeth Adeiladu'r DU
Subject: Ystadau a Cadw
English definition: UK Association of Building Preservation Trusts, also known as the "Association of Preservation Trusts".
Welsh context: Gelwir hefyd yn "Cymdeithas Ymddiriedolaethau Cadwraeth".