Cracks internally and question over brickwork outside

I'm sure these weren't visible before as I'm pretty OCD about things. But could they be there over time and due to weather conditions have now just become more visible? Just trying to understand the reasoning in them now appearing.
I read that cracking through bricks themselves was more concerning but some of these are spread out over the wall outside. Not like in one concentrated area or a long line for example.

You seem to be one of the most knowledgeable blokes on here when it comes to questions like this so appreciate any advice.

 

Those are cracks caused when the bricks are fired in the kiln and open a bit when the brick shrinks after firing. Most of the time the bricklayer throws them out.

 

Depends what subby they are working for

 

Thanks. Is there any other things I need to be concerned about here Then? I am sure that these cracks have appeared more recently which is why I'm concerned or do I need to stop stressing over This? Anything to watch out for with them?

 

Forget the bricks. Concentrate on lining up the hot and cold taps.

 

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