This dense cluster of red berries, the fruit of the Wayfaring-tree (Viburnum lantana), started out green, turned to this lovely red and will end up black! Whilst very attractive and potentially tempting to pick they have unpleasant effects on the human digestive system causing vomiting and diarrhoea and so they are best left to the birds who can eat them with no ill effects at all. Each berry has a single seed and depends on birds, especially members of the thrush family, to disperse it.
The Wayfaring-tree is quite common, especially on chalk, here in the south eastern lowlands of England and is often seen in Dorset, right on the western edge of its range. It can be found frequently in hedgerows from where its common name derives; faring well along the way. Despite being quite common I suspect they go somewhat unnoticed with a tendency for people to think they are some other berry bearing shrub. We all have heard of hawthorn and blackthorn but Wayfaring-tree?