Prolific and well-regarded editors for the series included William Stubbs (19 volumes), H. R. Luard (17 volumes), and H. T. Riley (15 volumes). Editors were handsomely paid (Stubbs received, over the lifetime of the series, a total of some £6,600; Luard £6,432; and Riley £6,487). However, although editorial standards were often high, there was little supervision or opportunity for enforcing editorial quality, and little incentive for dilatory editors to bring their work to fruition; and as a result there were also less successful editions. In some quarters the project came to be regarded as providing an easy source of income for relatively little work.