The tree experts introduce the ancient yew at Runnymede, which may have been 1,700 years old when King John signed the Magna Carta under its branches in 1215; the existing Isaac Newton apple tree and other wonderful ancient trees from around England, Wales and Northern Ireland. Power is head gardener at Stourhead. Muelaner is co-author of Ancient Trees of the National Trust.

Do you have a tree you need identifying?  Bring us a leaf or a photo and we’ll ask our experts Brian and Alan and The Woodland Trust’s tree guru Jill Butler. They’ll be at the Woodland Trust stall onsite during the day.