Former BBC Ground Force celebrity builder Tommy Walsh lent his tricks of the trade to help build a water feature for the Chelsea Flower Show.

The Hackney born-and-bred star worked with award-winning designers Janet Honour and Patricia Thirion to create a rainwater harvesting jar in an Indian-themed Artisan garden to support charity WaterAid.

Tommy spent time in India in 2001, helping the Ground Force team create a garden at a children’s home in New Delhi. Inspired by this experience, Tommy offered to help with the design and construction of the jar.

Tommy said: “I am thrilled to be involved. This simple, but effective technology is essential in ensuring that water is available all year round, something that we all take for granted. I have seen for myself how simple solutions like this really do make a huge difference to everyday life and basic survival for families in India - and I hope that visitors to the garden will be inspired to support Herbert Smith Freehills’ Garden for WaterAid.”

WaterAid helps the world’s poorest communities to safe water, improved hygiene and sanitation. In India, over 93 million people are living without access to clean water and the charity claim they reached 536,000 people with water and 353,000 people with sanitation in 2011/12.

The garden which will be on display from May 21 to 25, consists of a simple house on stilts with a veranda while the surrounding garden is ablaze with colour and features marigolds, roses and hanging garlands being grown and prepared for sale in the cut-flower industry, which is a big business in India.