On 05/12/16 14:57, The Natural Philosopher wrote:

Id say its more likely to need building control (to ensure you do it
right and don't e.g. introduce flooding problems) than planning (to
ensure you don't do it all, or ensure it doesn't impact on visual or
infrastructural stuff)

Good call - I'd thought of that - and can ask the BCO in person when he
does his final inspection. There's no folloding risk (all back drained
onto my land) but he might have something to say about retaining walls
bordering highways...

If only our PP officers were available for 15 minute ad hoc queries...