Bricks slipped on DPC - is it usual?

[yamahaliam]

In the process of buying a 1930's house, and just noticed that the course of bricks on top of the DPC have slipped outwards by about 5mm on one wall.

This wasn't spotted in the survey (or if it was it wasn't mentioned) and there are no other signs of cracking or movement.

Should I be worried, or is this common?

 

[stuart45]

It can happen through expansion of the brickwork. Bricks are usually at their smallest when laid and then expand. Some bricks like Calcium Silicate are more prone than others.
Blockwork usually shrinks.

 

[Thermo]

its been standing for 80 years. i doubt its going anywhere