© Licensed to London News Pictures. 30/04/2019. ASHRIDGE, UK. Visitors photograph the bluebells bloom in Dockey Wood, Hertfordshire.  As the popular location experiences high numbers of visitors, the National Trust has imposed an entrance fee in recent years during busy periods with barricades of twigs and branches to demarcate pathways to protect the delicate flowers from being trampled.  Photo credit: Stephen Chung/LNP