https://www.slab.org.uk/guidance/legal-aid-for-an-appeal-by-a-person-convicted-of-an-offence-who-has-since-died-criminal-legal-aid-for-appeals-in-scottish-criminal-cases-review-commission-cases/
The provisions under our legislation relating to criminal appeals [sections 25 and 25AB of the Legal Aid (Scotland) Act 1986] apply to any appeal within the meaning of section 303A of the Criminal Procedure (Scotland) Act 1995 [section 25AA of the Legal Aid (Scotland) Act 1986]. Under this, a person may be authorised by the High Court to institute or continue any appeal which could have been, or has been instituted by a person convicted of an offence who has since died.