Mods, not sure where this should go, please feel free to move it.
Besides getting a plumber out. What is the best way of trying to unblock a stormwater drain?…

Thanks for all the advice. Sorry I haven't managed to upload the photos yet. Will do as soon as I can

I know towards the drainage, but how do…

In brief we are on solid rock! We have jack hammered away the rock to try and make it more level. And we have now put soil over…