Thanks to Mr G Brown I have plenty of spare time on my hands so I am setting
about converting the front garden to block paving. The drive is already
done. The garden is dug out and I have used bricks from a demolished wall
and broken concrete from the old foundations of a greenhouse as the hardcore
for the paving.
Problem is what is the best medium to crush down into the voids between the
concrete.
MOT looks as though it is too course for this so what should I use?

Kevin