HRH Princess Margaret appears in The Archers, 1984.
A special 'Ambridge Village' is being set up at the Three Counties show in Malvern, which runs from Friday, 18 to Sunday, 20 June 2010.
The radio soap is celebrating 60 years since the first recording was made.
Many of the cast will be there, and there will also be line dancing, welly wanging, ferret racing, and a 'guess the weight of the piglet' competition.
For more details of events at the Ambridge Village, and to buy tickets, visit the
Archers Addicts website.
Meet the cast
Dairy and beef farmers David and Ruth Archer (Timothy Bentinck and Felicity Finch), and their organic farmer cousins Pat and Tom Archer (Pat Gallimore and Tom Graham), will join other Archers' characters in chatting to show visitors.
Graham Seed as Nigel Pargetter and Alison Dowling as Elizabeth Archer.
Fans will also meet party-loving bonne vivante Lilian Bellamy (Sunny Ormonde), buxom barmaid Jolene Perks (Buffy Davis), milkman Mike Tucker (Terry Molloy), shop manager, Susan Carter (Charlotte Martin), ex-teacher and Golf Club Catering Manager Kathy Perks (Hedli Niklaus) and the irrepressible, cider-loving Jack of all trades, Eddie Grundy (Trevor Harrison).
On Saturday, 19 June a special 'Green Welly' ticket will give show visitors exclusive access to 'The Bull Upstairs', where they can meet famous Archers actors, pick up a special Ambridge Treasure Trail, collect a jubilee goody bag, and enjoy a free glass of cider.
A gold ticket gives visitors the chance to enjoy a three-course Diamond Jubilee Gala Dinner and Brain of Borsetshire quiz in the evening.
Archers' editor Vanessa Whitburn and actor Charles Collingwood, will be sharing their fascinating experiences and offering a whole new perspective of life in 'Ambridge'.