Low lightmap resolution. You need to decrease the value for BSP’s and increase it for imported static meshes. More info here: A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums
OOOOOOOOOOOOOK so,
Things like this is why i avoid new software.
So already iv got a lighting issue. Using simple blocked walls (BSP Blocks) the shadows are awful. I dared to use a fbx and thats even worse. Any help please??? 
Cheers, il give it a go 
Ye that worked thanks. Don’t say anything about that in the tutorial do they haha