Rebuck and Mackenzie make Woman's Hour's top 100

Random House c.e.o. Gail Rebuck [pictured] and author J K Rowling are both among the top 20 most powerful women in Britain, according to a new poll by BBC Radio 4 "Woman's Hour". Meanwhile Little, Brown c.e.o. Ursula Mackenzie has also made the top 100.

Rebuck was voted the 10th most powerful woman, with Rowling coming in at number 13.

Mackenzie is included among the top 100, which is unranked beyond the top 20, along with poet laureate Carol Ann Duffy, comedian and writer Dawn French, Granta owner Sigrid Rausing, broadcaster and author Clare Balding and Southbank Centre artistic director Jude Kelly

Also in the top 100 is Margaret Hodge who, as chair of the public accounts select committee, gave companies including Amazon and Google a memorable grilling on tax avoidance. 

The number one spot on the list is taken by the Queen.