Their civil commissions were the commission of assize and the commission of nisi prius.

This income was supplemented through work on commissions of assize, goal deliveries, and oyer and terminer.

In 1240 he was on the commission of assizes for Hertford and the southern counties, being next in rank to William of York, 'præpositus de Beverley,' and holding the office 'a die nativ.

If a county borough did not have a separate commission of assize, oyer and terminer and jury service, or gaol delivery, it was deemed to be part of one or more adjoining counties for those purposes.