These concrete blocks were bought for a pond that was never finished 15 years ago.  Some have been in a shed, a few other were left outside.  Collection only from Camberley.  They are at the end of my garden. Hopefully a bargain for someone!

This concrete block is a versatile and durable construction material that is perfect for a range of applications. With a load bearing value of 7.3N, it is suitable for secure basing, load-bearing walls, foundation walls, boundary walls, construction of columns and beams, partition walls, and external and cavity walls. The block is made of high-quality concrete and has excellent insulation properties, making it a great choice for buildings in the United Kingdom. It is also resistant to sound, water, and fire, ensuring that it is a long-lasting and reliable construction material. This 100mm wide block has a rough finish and is grey in colour, making it a stylish addition to any building.