Mae’r Arglwydd Lloyd-Jones yn Farnwr y Goruchaf Lys ers mis Hydref 2017. Mae’n siarad Cymraeg a chafodd ei eni a’i fagu ym Mhontypridd. Cafodd ei benodi i’r Uchel Lys yn 2005, a bu’n gwasanaethau fel Barnwr Gweinyddol ar Gylchdaith Cymru ac fel Cadeirydd Pwyllgor Sefydlog yr Arglwydd Ganghellor ar yr Iaith Gymraeg o 2008 i 2011. Yn 2012, fe’i penodwyd yn Arglwydd Ustus Apêl ac ef oedd Cadeirydd Comisiwn y Gyfraith o 2012 i 2015.
Lord Lloyd-Jones has been a Justice of the Supreme Court since October 2017. He is a Welsh speaker and was born and brought up in Pontypridd. He was appointed to the High Court in 2005, served as a Presiding Judge on the Wales Circuit and Chair of the Lord Chancellor’s Standing Committee on the Welsh language from 2008 to -2011. In 2012 he was appointed a Lord Justice of Appeal and was Chairman of the Law Commission from 2012 to 2015.