Thanks for the feedback all - very useful sense check!
The bulb stopped working so I have removed it and the bracket to return. I'll replace with something different and attach it above the doors lengthways and facing back, so at least it's out of the way and provides more even lighting for the plants.
I have attached a photo of the background work in progress. This needs more carving, then silicon and coco/bark covering. Hope it'll look ace when done and planted!
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