The builder is Persimmon Homes.
We have since had a defect survey report carried out, which has stated that the following needs done:
Installation of bed joint reinforcement as per the guidance stated in section 5.1 of the report and prepared by Premier Guarantee
Replacement of all fractured bricks to the gable corners
Raking back and repointing of the isolated hairline fractures to mortar
Installation of a vertical movement joint between the french door head and first floor window sill, extending above the first floor window head, to eaves level
I wrote to the managing director and all of a sudden they are interested in fixing the issues.
We havent noticed any cracking internally in those areas as far as we can see.