Ellie's house in Hextable would be suitable for the 1st and 2nd locations as it is on a main road and has a wall featured in both scenes. Sarah Brushett's house in Eynsford would work for the 3rd location flashback scenes as it provides a different setting than the first house. Eynsford Castle or a country lane in Sutton-at-Hone would serve as the 4th location as both offer secluded areas needed for that scene.