Lord Dyson, who formally retired as Master of the Rolls on Sunday, has rejoined 39 Essex Chambers, which he once headed.
He will work principally as an arbitrator in all areas of law but with a particular focus on commercial, public international law and sports law.
Lord Dyson, who is 73, said: “I am delighted to return to 39 Essex Chambers which has become hugely successful in so many diverse areas of law.”
David Barnes, chief executive and director of clerking, added: “It is a great pleasure to welcome Lord Dyson back to chambers, following his esteemed judicial career and his retirement this year as the Master of the Rolls. We very much look forward to working with him again as 39 Essex Chambers further expands its international and domestic arbitration services.”
Lord Dyson had four years as Master of the Rolls and head of civil justice, the culmination of 30-year judicial career which saw him appointed to the High Court bench in 1993, the Court of Appeal in 2001 and Supreme Court in 2010, only for him to return to the lower court when he became MR.
Prior to becoming a judge, Lord Dyson had a varied practice at the Bar. Called in 1968, he became a QC in 1982 and in 1986 joined 39 Essex Chambers as head of chambers.
He has been replaced as MR by 65-year-old Sir Terence Etherton, who was the Chancellor of the High Court (that is, head of the Chancery Division).
There has still been no announcement of his replacement as Chancellor. There are strong rumours that it will be either Lord Justice Vos or Lady Justice Gloster, with the latter supposedly favoured by justice secretary Liz Truss, who wants to see a woman in the role.
During her speech today to the Conservative Party conference, Ms Truss highlighted the need for greater diversity in the judiciary.