Sir John Frank Mummery, DL (born 5 September 1938) is a former Lord Justice of Appeal and was President of the Investigatory Powers Tribunal and a member of the Court of Ecclesiastical Causes Reserved in the UK.
Mummery attended Dover Grammar School for Boys between 1949 and 1957 and then Pembroke College, Oxford.
By the 1970s he was known as a copyright barrister,[1] being consulted on matters such as Led Zeppelin's Black Mountain Side and its relation to Bert Jansch's version of Down by Blackwaterside.
He also represented Apple Corps in efforts to stop the distribution of recordings of The Beatles in Hamburg.
He was, from 2003, Chairman of the Trustees of the Royal Courts of Justice Citizens Advice Bureau.