The project for the Institute of Directors in Pall Mall features seasonal planting, troughs and hanging plants, said designer Lynne Rushen.
"Courtyard gardens can lack light at certain times of the day so it’s important to use plants that can thrive in that environment," she said. "The new garden extends the institute’s restaurant and the hanging plants echo the interior planting scheme."
Director of hospitality at the institute Ian Sparrow said: "We have turned a previously underutilised area into a haven from the bustle of the West End. The garden has become our hidden gem this summer and cleverly complements the interior planting."
Ambius, a division of rat-killer Rentokil Initial, claims to be the world’s largest provider of plants, replica foliage and flowers for commercial environments.