Roedd rhai o’r ymatebwyr wedi mynegi pryderon ynghylch y diffyg erlyniadau llwyddiannus o dan Ddeddf Henebion a Mannau Archaeolegol 1979. Rhwng 2006 a 2012, rhoddwyd gwybod i Cadw am 119 o achosion o ddifrod anghyfreithlon i henebion rhestredig yng Nghymru. Serch hynny, ni fu ond un erlyniad llwyddiannus o dan y Ddeddf yng Nghymru drwy gydol y 25 mlynedd diwethaf.
Some consultees expressed concerns about the rarity of successful prosecutions under the Ancient Monuments and Archaeological Areas Act 1979.  Between 2006 and 2012, Cadw received reports of 119 cases of unlawful damage to scheduled ancient monuments in Wales.  However, there has been only one successful prosecution under the Act in Wales in the last 25 years.