Thousands of people will join the family and friends of TV presenter Caroline Flack in West Berkshire next week as a memorial festival returns for its third year. Flackstock, which is held at Englefield House, is an intimate day-long festival to celebrate Caroline’s life with comedy, dance and music, while also raising critical funds for mental health charities. The event, which is organised by Caroline’s mother, Christine, and sister, Jody, along with her friends Natalie Pinkham, Dawn O’Porter, Anna Blue, Sarah Tyekiff, Liz Holmwood and Leigh and Jill Francis, has already raised nearly £500,0…