In the Order of Precedence of letters after the name, these letters follow the abbreviation Bt (Baronet) and Esquire, Orders and Decorations conferred by the Crown and Royal appointments.
They appear in the following order:
Queen's Counsel (QC)
Justice of the Peace (JP)
Deputy Lieutenant (DL)
The letters QC are always shown for a Queen's Counsel, including a County Court Judge, but not a High Court Judge. The letters JP for Justice of the Peace, and DL for a Deputy Lieutenant may be included in that order. They may be omitted for a peer, or for someone with several honours and decorations.
Note: There is no official abbreviation for a Lord-Lieutenant or a Vice-Lieutenant