The Ministry of Justice does not currently hold any information on the amount of time spent by judges on administrative and managerial work. All judges may be called on from time to time to assume responsibilities in relation to the courts and jurisdictions they work in. How much time these responsibilities take to discharge will depend on the level of responsibility, the circumstances and the judge.
I am informed that the Judges’ Council is undertaking work at present to provide better estimates of judges’ workloads. The collection, and any release, of this information is a matter for the Lord Chief Justice.