The good news is that the vast majority of building defects are not caused by subsidence and can generally be remedied by a competent building contractor.
A roof with untied or unrestrained rafters tends to spread outwards and push out the tops of the walls.
Mainly vertical cracks of relatively constant width and often they are not visible below the damp proof course.
Corrosion of metal ties embedded in mortar bed joints causes cracking by expansion of rusting wall tie.
Structural cracking often appears over window openings where the supporting lintels or beams have deflected.
Chemical reaction to concrete floors triggered by water or dampness resulting in heave or expansion of the floor slab.