I don't know what the paperback version is like but the 1981 Hardback version is still the best comprehensive overall one volume survey of Roman Britain.
The first few chapters are concerned with the first Roman Contacts:
The British Background
The Expeditions of Caesar
From Caesar to Claudius
Next is the Roman Conquest and its aftermath:
The Claudian Invasion
Resistance and Revolt
Recovery and Advance
Next is a section on "imperial Crisis and Recovery":
Civil War & its aftermath
From Caracalla to Diocletion
Constantine the Great
The Middle of the Fourth Century
The Restoration of Order
Then the last of the sections on the consecutive history - Roman Britain in the Fifth Century World:
The Collapse of Imperial Rule
Britain, the end of the Western Europe & the successor states
The last section is more of a general view of Roman Britain, not in chronological order but by subject:
The assimilation of Britain
The Historical Georgaphy of Roman Britain
Town & Country
Religion and Society
Then Appendices and Bibliography.
As you can see the book is really comprehensive. It covers everything you would want to know about Roman Britain in a scholarly way but clearly and concisely.
The only book you will need on Roman Britain... perhaps!