Davies spent a period with The Sunday Times of London; since then, as a freelance contributor, he has written extensively for the Sunday Times, The Sunday Times Magazine, The Times, Daily Telegraph, The Independent, Mail on Sunday, Country Life, and other quality newspapers and magazines.

Since 1989 he has written almost weekly for the Radio Times, (despite its name the UK's main TV listings magazine), where he specialises in wildlife and the environment, science and history.

He has written two books. "A Walk along the Thames Path", published by Michael Joseph in 1990, combined travel writing with his interest in walking and the countryside. (The first chapter is on http://homepages.bucksnet.co.uk/~ghdavies along with a selection of his journalistic work).

"England's Glory" was commissioned by the Council for the Protection of Rural England to accompany photographs of threatened landscapes by leading British photographers, including Lord Snowdon, Patrick Lichfield and Linda McCartney, and published by Weidenfeld and Nicholson in 1987.

In 1990 he was runner up in the TV-am National Broadcast Journalist of the Year Awards, in the Best Specialist Press category.

In 1998 Davies won the Italian Tourist Board's "Most Intriguing Journalist" award for an essay on Turin, and finished second in the German Tourist Board's awards for an article on Nuremburg.

He lives in the Chilterns north of London with his wife and teenage children.