An old fashioned concrete block.

[BML]

I lived in a bungalow years ago built between the wars out of secondhand timber from Milton Camp. Eventually it was covered with concrete block walls.

These blocks were 6” thick X 9” X 18” were extremely dense and had what I would describe as a, “Knobbly finish” which I suppose was meant pretend the blocks were hand carved from stone. The garage where I live now was built from the same type of blocks and I would like to extend it but I can’t discover the correct name for that type of block and am asking if anyone can tell me

 

[RandomGrinch]

Is this approx what you want?

You can search for 'Rock faced concrete block'
https://www.robert-price.co.uk/mxtra/shop/product?productID=262765
Hope that helps!

 

[BML]

BLOCK CONCRETE ROCKFACE Many thanks for that, now I have a name when looking for nine inch options.