Before levelling the lawn we created a drainage trench at the edge of the patio so that (hopefully) it won't get too boggy. Especially with the run off under the curve as there is no gutter.
We then set to work levelling
Then, once we'd rolled it all we were able to add fertiliser, followed by seed a few days later
It's not often we're grateful for the typical British summer weather but it seems to be helping the lawn grow!