What do I call a judge?

Here are the different ways to address members of the judiciary:

Senior judiciary

Address (in Correspondence) Dear… In court
The Right Honourable
The Lord Chief Justice of England and Wales
Lord Chief Justice/Chief Justice

My Lord

or

My Lady

The Right Honourable
The Master of the Rolls
Master of the Rolls
The Right Honourable
The President of the Queen’s Bench Division
President
The Right Honourable
The President of the Family Division
President
The Right Honourable
The Chancellor of the High Court
Chancellor
Retired Head of Division Title in Private Capacity N/A

Court of Appeal Judge

Judges who sit in the Court of Appeal (Lords Justices of Appeal) are Privy Councillors. They are known officially as Lord Justices. They should be addressed as follows:

Address (in Correspondence) Dear… In court
The Right Honourable Lord Justice Wells Lord Justice My Lord
The Right Honourable Lady Justice Wells DBE Lady Justice My Lady

High Court Judges

Members of the High Court are not usually Privy Councillors.
Their official designation is as follows:

Office/Position Address (in correspondence) Dear… In court
High Court judge The Honourable Mr Justice Wicksteed Judge My Lord
High Court judge The Honourable Mrs/Ms Justice Wicksteed (whether married or single) Judge My Lady

High Court Masters & Registrars

Office/Position Address (in correspondence) Dear… In court
Master Master Holman
(whether male or female)
Master Master
Registrar Mr (or Mrs) Registrar Holman Registrar Registrar
Insolvency and Companies Court Judge Judge Holman (whether male or female)  Judge  Judge

Circuit judges

Some Circuit Judges – for example, The Recorder of Liverpool or Central Criminal Court judges – are referred to as “My Lord” or “My Lady”.

Address (in correspondence) Dear… In court
His Honour Judge Williams (QC if appropriate) Judge Your Honour
Her Honour Judge Williams (QC if appropriate) Judge Your Honour

District Judges

Address (in correspondence) Dear… In court
District Judge Pennington Judge Sir or Madam

District Judge (Magistrates’ Courts)

Address (in correspondence) Dear… In court
District Judge (Magistrates’ Courts) Stewart Judge Sir or Madam

Magistrates

Dear… In court
John Curry, Esq JP Your Worship, or
Sir or Madam

Tribunal Judges

Address (in correspondence) Dear… In court
First-tier Tribunal Judge/Upper Tribunal Judge (depending on position) Curry Judge Sir or Madam

Employment Judges

Address (in correspondence) Dear… In court
Employment Judge Collins Judge Sir or Madam