The light in the kids' toilet has blown (I actually think it's the transformer) and while I am arranging to have a sparky out for that and a few other little jobs, it occurred to us that really for daytime a better thing would be a skylight. The room has no external wall access (hence no window) and had I thought of it I'd have had it put in at time of build.
Anyhow I didn't - and so today had the skylight installed. And what a difference!
This is with no light - just the skylight
Huge difference
No excuse for not keeping it clean now