An artificial collection of documents brought together mostly from records of the Ancient Miscellanea of the Queen's Remembrancer's Office, and to a lesser extent from the records of the Lord Treasurer's Remembrancer's Office, the Treasury of the Receipt (some manorial documents came from the collection of deeds now E 40), the Office of Land Revenue Records (LR 5, LR 6, LR 8 and LR 12), the Augmentation Office, the Tower of London, and Chester Castle as part of the records of the Palatinate of Chester (otherwise in CHES). Many records have also been removed from SP 5. The series contains the accounts of officials responsible for crown lands belonging to the ancient demesne of the crown which did not form part of the sheriffs' annual accounts or which came under their administrative control. It also incorporates accounts of manorial officials for lands which subsequently came into crown hands through escheat, exchange, forfeiture, inheritance or sale.
The accounts include those of aliens and alien priories, bishops' temporalities, contrariants' lands, lands in Wales and the Welsh Borders including the Marcher lordships, lands in Ireland, and household accounts of monasteries.