Media playback is unsupported on your device

Meet the author: Philip Lymbery

31 January 2014 Last updated at 09:40 GMT

Campaigner Philip Lymbery is the chief executive of Compassion In World Farming, a group which wants to put an end to factory farming by 2050.

He is also an author, after penning Farmageddon: The True Cost Of Cheap Meat, with the Sunday Times journalist Isabel Oakeshott.

Lymbery talks to Meet The Author's Nick Higham about the extensive research he and Oakeshott undertook for the book.

More from Meet The Author.

Copyright © 2015 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.