I wonder if anyone can advise me about some work I have done in my living room in regard to the building regulations. I needed to install a light in the centre of the room. I could not access the joists from via the floorboards upstairs due to the fact a bathroom floor had recently been tiled. There are noggins between the joists so rodding was not an option. The only option available was to chase out the ceiling. I intended to drill through the joists with access from the ceiling, but instead I thought it would be easier to just use capping, so I nailed capping to the bottom of the joists and ran the cable through the capping. I am worried now that this work may not be compliant with the building regulations. I can't find anywhere in the regs that forbids this, but I may have missed something. Can someone please advise me.