This 18th century cottage had moved over the years. this can simply be as a result of the way it was initially constructed with shallow foundations, or as a result of the ground moving over time.
The ground can move as a result of below surface streams that move the soil and leave voids, or if it is on a clay substate, this can expand and contract as the conditions change from wet to dry.
Structurally the house has developed cracking in the external walls, this can also be as a result of the lime mortar losing some of it inherent strength over time. The engineer proposed cracking stitching the areas that were problematic designed a suitable remedial scheme.
This has now been undertaken and the property is ready to be redecorated.