Probate is called letters of confirmation North of the Border where it is not a good idea to use the English term. So Deane's suggestion would IMO work throughout the UK: quaere the Channel Islands and the Isle of Man.

överförmyndare :

1. Chief Guardian; Br. domstol > Court of Chancery; äv: Public Trustee > Gullberg. Note that, in E&W, the Principal Probate Registry on High Holborn in London is now part of the Family Div. of the High Court, but disputes have been traditionallly dealt with by the Chancery Div.

2. särskild, *kommunvis* tillsatt person som skall öva den närmaste tillsysnen över förmyndarnas förvaltning > Juridikens termer, Almqvist & Wiksell.

PRs in E&W means personal representative and includes executors where there is a Will and adminsitrators on intestacy.

BTW, the UK and Irish Societies of Trust and Estate Practitioners are professional bodies that may include non-lawyers.

You can appoint the Public Trustee as the executor of your estate to deal with your property and money after you die if: there's no suitable person who's willing and able to act as executor at that time, eg someone who's over 18, isn't bankrupt and doesn't have a criminal conviction.