Bricks of 1930s house covered in small cracks

[stu12345]

I am looking to get the opinion from people in the know regarding a number of small cracks in the bricks of my 1930s house (see picture).
The cracks don't extend into the mortar and from what I can see from my internet searches I'm thinking its fire cracking, however it would be good to get some more opinion of this and also to know if this can cause me a problem.
I'm sure its fine - I mean the house has been here for 80 years but still, don't want to take anything for granted.
Many thanks

Untitled

• stu12345
• 27 Feb 2013
• 1

 

[Lower]

Those bricks are fine and will have been like that since new.

Relax, your house is not about to collapse.

 

[Nige F]

They cracked in a fire in the kiln.