Presenter biographies: P to R

Columnist and writer Sarah Raven is well known for her love of growing flowers that can be cut and made into colourful indoor arrangements. As well as her home-run courses and seed catalogue she lectures all around Britain.

Sarah specialises in teaching people who've never picked up a spade, let alone pricked out a zinnia! Her catalogue contains unusual vegetables, salads and herbs, as well as flowers grown specifically for cutting. She grows plants to supply her courses, and for weddings and parties.

A columnist for the Daily Telegraph, Sarah also writes for Sainsbury's Magazine. Her first book, The Cutting Garden, won The Specialist Gardening Book of the Year. Her more recent book, The Bold and Brilliant Garden, was runner-up to Gardening Book of the Year.

She appears occasionally on Gardeners' World, and has written two books to accompany this series: Grow Your Own Cut Flowers and Grow, Cook, Eat.

Eric has been presenting gardening programmes for over 20 years. A broadcaster and television documentary maker, Eric's is also well known as a regular commentator on State occasions such as the Act of Remembrance at the Cenotaph, Trooping The Colour and several royal weddings.

Continuing the tradition of Gardeners' Question Time chairmen over the last 54 years, Eric is employed as a broadcaster and is the only one of the team who is not a trained horticulturist.