Wilkes do 20 mm gravel for £38 a tonne or alternatively phone a local grab hire place and they might sell cheep un-bagged gravel, Travis Perkins sells gravel cheep as well and have free delivery, just phone around.
Put a string on the top with a level after which each two to four ft put yet another marker with the extent make certain it is straight and repeat. It'll exhibit you where you need to fill and where you do not. Excellent good fortune
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Wilkes do 20 mm gravel for £38 a tonne or alternatively phone a local grab hire place and they might sell cheep un-bagged gravel, Travis Perkins sells gravel cheep as well and have free delivery, just phone around.
Put a string on the top with a level after which each two to four ft put yet another marker with the extent make certain it is straight and repeat. It'll exhibit you where you need to fill and where you do not. Excellent good fortune
run a crush will provide a nice solid stable base with good drainage as well