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On the Back of an Envelope

A Life in Writing

Peter Hennessy author Polly Coupar-Hennessy Peter Hennessy author

Format:Paperback

Publisher:Haus Publishing

Published:16th Oct '25

£14.99

Available for immediate dispatch.

On the Back of an Envelope cover

1) Review in House Magazine by Lord Howell

2) Social media posts from Dr Kathryn Rix and Richard Toye [long-term]

Renowned historian Peter Hennessy illustrious career spans post-war to post-Brexit Britain, and here he gives a wealth of anecdote and reflection from this most astute observer of Westminster and the establishment.

One of Britain's foremost constitutional experts, Peter Hennessy has spent his five-decade career unpicking the arcane world of Whitehall and Westminster as a journalist, prize-winning historian, and political commentator. In doing so, he has chronicled the workings of the British state with wit, affection, and a healthy sense of absurd. 

In On the Back of an Envelope, he reflects in his time observing post-war Britain and its governance, considering the making and unmaking of prime ministers from Attlee to Truss, the role of the Monarchy, and the changing constitutional landscape in the wake of Brexit and in the midst of uncertainty about the Union. Interspersed with lectures, journalism, and new pieces, Hennessy looks back at a fascinating career, reflecting on his own experiences in the hard-nosed world of Fleet Street in the 1970s and bringing to life a cast of characters from a world now largely gone. He also revisits his time as a public historian, academic, and crossbench peer with a levity reflected in his belief that history is 'gossip with footnotes'.

'One of the country's finest contemporary historians, Hennessy has tracked Westminster like no one else'

-- Financial Times

'Hennessy, unique among contemporary historians, understands politics from the inside out'

-- The Times

'No current historian is as versed as Hennessy in the internal cogs and springs of the British state, but he also hs a keen eye for the luminous face of passing time'

-- The Observer

'Hennessy is ... driven by a romantic, almost sensual, fascination with British history, culture, and the quirky intricacies of British democracy and the government machine. His curiosity is insatiable, his memory infinitely capacious'

-- The Spectator

'What makes him such a deft public historian is the way he stitches patches of rich local colour into a narrative with the widest possible reach'

-- Guardian

‘In its pithy, personal yet panoptic tone, it is strongly reminiscent of Orwell’s wartime essays – with the author’s deep knowledge of contemporary politics and society worn very lightly.’

-- Ian Cawood, Times Literary Supplement

‘Perceptive, witty, and positive.’

-- Church Times

‘Lord Hennessy’s timely collection of his thoughts on our constitution and democracy is written with his usual clarity.’

-- The House Maga

ISBN: 9781914979323

Dimensions: 198mm x 129mm x 24mm

Weight: 300g

306 pages