Block paving - Block paving on sloping drive

[monfra45]

Hi all this is the first time I have posted to brew cabin so please excuse grammar . My existing drive slopes down to pavement and the slope is the natural slope of the underlying rock face except for the last 11/2 meters which is compacted 200mm sub-base, all this was covered with a layer of tarmacadam in 1975 and is only now showing signs of wear and tear. so I have decided to lay clay block pavers on it to herringbone design. The side edging and soldiers have already been laid, and along the bottom of the drive a 2"x6" concrete edging with a concrete haunch acting as a ramp from the pavement end, and next to them on the start of drive side, a border of clay blocks laid on concrete, then a linear drain next to them running to a soak-away ,and then another border of blocks on concrete level with side soldiers and about 5mm higher than drain. My question is -- should I dig up the tarmacadam at this point say about 12" wide across bottom of drive and replace with compacted sub-base material to facilitate the draining of rain water which will inevitably to some extent drain through the block paving?

[sy76uk]

Firstly, well done for deciding to use clay paving rather than concrete.
Secondly I get some of your post but not all of it.
I think we will all need pictures before any advice can be given on how you have gone about things so far and what should be done next.

[monfra45]

Hi Im not very good with computer so I do not know how to send pictures, sorry. I have edited my original enquiry in the hope that it is clearer to understand, what I am trying to explain.

Kind regards