Hi I am in the throws of purchasing a 1930s house that needs modernising. It largely looks sound but there are cracks along the edge of the ceiling and wall all along one side of one bedroom. Other rooms look okay although they are all wallpapered (all firm and intact) and have coving. I have attached 3 photos. I will get a building survey done to look but wondered if anything can be suspected from observation. Any thoughts appreciated. Thanks.