The front down pipe was easier to deal with as the one above the paving had already been plumbed into a soak well, so we just probed around and found the run in pipe and tapped into that, also installing a drain beneath it allow any overflow into the garden.
So monday morning last week I woke early to meet the fence painter and was pleasently surprised when the irrigation installers arrived a day early to install the irrigation ready for the landscaping to start. 2 days later, the landscaping started nice and early (I decided to stay in bed for just a little bit longer while they rattled around outside) and they got most of it done on the first day! Here's the pics I managed to score before having to leave for work!
Before landscaping started, I put in a lot of effort leveling the sand and weeding the sand out with help from the GF