Didn't want to hijack the similar thread on this.
About five years ago I got some local builders to demolish a wall between the kitchen and the breakfast room, to make it all one large room. The wall was a supporting one, but they fitted a rsj.
I had no idea that there was such a thing as building regulations for this. And the builders did not mention it.
Do I need to do anything now? Was this wall removal illegal? Help!