I mentioned this series in a recent post. It appeared between 1950 and 1965, not in this order:
Roman Britain, Ian Richmond
The Beginnings of English Society, Dorothy Whitelock
English Society in the Early Middle Ages, Doris Mary Stenton
England in the Late Middle Ages, AR Myers
Tudor England, ST Bindoff
England in the Seventeenth Century, Maurice Ashley (replaced in 1978 by Stuart England, JP Kenyon)
England in the Eighteenth Century, JH Plumb
England in the Nineteenth Century, David Thomson
England in the Twentieth Century, David Thomson
Since all history writing is about two things, the perspective of the historian and the purported subject, I am happy with out of date books. I suspect that these have, in any case, lasted rather well.
The successor-series, in print now, are the Penguin History of Britain and Penguin Social History of Britain.
Pelican, the non-fictional branch of Penguin, was a major force in UK publishing from 1937 to ’84. It was relaunched in May this year, but without the original energy and impetus.