I posted this in the electrics forum but it may be more of a fixing to walls problem too.
I have never fitted a light before but I have taken the advice of a qualifed electrician and read the instructions that came with the fitting and I understand what to do. I took down the ceiling rose as the spotlights require a bracket fitting. I noticed that there was as a fitting in the hole with two brackets (like a box fitting but round) that the ceiling rose had been screwed into, I would have used this to screw the new bracket into but the holes are too close together and at the wrong angle for the spotlight bar I have. So all I had to do was drill two new holes into the ceiling to fit plugs into but when I started drilling into the masonary I couldnt get in more than about a centimetre, it seemed I had hit some metal, when I tried the other hole it was the same. I'm not sure if this metal is part of the existing box fitting or something else but I didnt think it would be a good idea to drill into it with a hss bit in case there are wires in there. The drill holes are about a centimetre from the hole where the rose was. Please help!