Photo courtesy of: Eleanor Benthall   To say thank you for the £30m raised for Good Causes every week by players, The National Lottery is offering free entry and special offers at a range of National Lottery funded venues across the UK as part of The National Lottery Open Week. From Saturday 19th – Sunday 27th March, anyone with a valid online or retail National Lottery ticket, Scratchcard or Instant Win Game can enjoy exclusive offers at Lottery-funded venues and attractions. There…