Several cracked bricks

[AndieA]

I am hoping to get some advice here before we contact anyone (insurance, NHBC etc.)
We are the second owners of a house built by Keepmoat in 2016.
No major issues were flagged during homebuyers survey, we did not have a full structural survey done 
We started to notice a few cracked bricks (see pictures).
These seem to be very random. There is no obvious pattern to it.
The cracks do not seem to be going through the mortar.
Any advice on what could be causing this please?
Thank you

[Maxell]

Hi , it is normal for a few bricks to crack as the house settles and dries out .

Maxell

[New Home Expert]

This is nothing to do with settlement as the mortar is intact.

My guess would be they were like this when built, hairline cracks as a result of the kiln firing of the clay during the manufacturing process.

[AndieA]

Thank you very much for your replies and the reassurance.
We took another picture recently and if you zoom in, there is a very thin hairline crack going through both bricks and mortar.
(I drew a line next to it on the photo).
We will contact NHBC I think, because this is on the corner of the house, where the rain drain pipe/drain is. And there are several cracked bricks on the other side of this corner too.
I do not have much hope that NHBC will do anything about it though (after reading some other posts on here).

[New Home Expert]

This looks serious and the NHBC must inspect it.
Get anything they tell you (excuses for doing nothing) in writing and tell them you want an independent engineer to inspect and report as you believe it is a structural failure.