RetroFestival is returning for another year at Newbury Showground in aid of charity. This year’s festival will be held on August 9, 10 and 11 — and is being billed as the biggest and best yet. The festival is a celebration of all things vintage, dating from the 1920s right through to the 1980s. The showground is expected to be crammed with family-friendly attractions and displays featuring more than 1,000 classic cars, motorbikes, scooters, caravans, hot rods, military vehicles, steam engines, American RVs, Airstream caravans and Teardrops. Many of the steam engines will also be providing ride…