The bricks don't have a "frog" (that recess which helps to lock it down on the mortar) but there is enough texter in each one to stop movement. I made the foundations deep with a wet concrete slurry around some solid concrete blocks 1ft down. The first two courses of brick are engineering which are very tough, absorb very little water and have holes which lock the wall to the foundation.
You can see the differences in the bricks if you compare each one but overall the wall looks uniform. I'll be back here in a few weeks with the completed accoya greenhouse and glass and we can see the finished effect.
Click on each