This book is required reading for those interested in the Thatcher government at its zenith and also for the events leading to Thatcher's downfall. Clark writes like a dream and includes much gossipy detail. Clark does not come out well from this, which adds to the credence that can be given to the diaries. So this very readable and entertaining.
However, it is a view from the right of the Tory party and Heseltine' s viewpoint (for instance) is not even recognised.There is nothing on Lawson's resignation or any serious reflection that the Thatcher government was running out of steam in 1990. There is some mindless recording of gossip which reminds one of what a shower this lot were. For a balanced view one should also read Lawson's,Howe's and Heseltine's memoirs. Nonetheless, as with Crossman's diaries the diarists tend to make the historical weather for a time at least.