Alan Titchmarsh presents the first in a series of special episodes in which he reveals the secrets behind some of his favourite garden designs, and looks back on some of the most memorable assignments featured on the show. The first episode focuses on country gardens, and revisits three past projects the team put inventive spins on - a classic country garden, a design with a cottage twist, and finally a project that set out to create an enchanted atmosphere inspired by classic children's book The Secret Garden.

Alan Titchmarsh and the garden makeover team head to Chippenham, Wiltshire to create a traditional formal garden for an inspirational couple. Richard Warren has been a serving Special Constable for 52 years, and dedicates his spare time to running marathons to raise money for charity, and caring for his wife Lynette, who has multiple sclerosis. The team shares tips on how to create a formal pond from scratch, screening solutions for unsightly spots in the garden, and reveals how to mark out a perfectly oval lawn.