Campaigners by a banner which has been put up in Watling Street, Radlett. Credit: Lynn Margolis Photography Campaigners have stepped up their efforts to raise awareness of a huge solar farm planned for the countryside. Banners are going up around Radlett and Elstree headlined ‘Save Our Green Belt. Stop the Solar Farm’ after official proposals for the solar farm were submitted last month. The Hilfield Solar Farm scheme would involve solar panels being constructed for a period of 35 years over 20 fields on land that stretches from Elstree Aerodrome, out towards the A41 in Patchett’s Green, and over towards Letchmore Heath and the outskirts of Radlett.