I am at the first fix plumbing stage of our bathroom refurbishment and removing some of the old pipe work I am finding loads of supplementary bonding back from the days of the 16th edition of the regs. I think.
I believe the rules have changed since and this is no longer required, am I obliged to re-instate it or can it be scrapped? I do have main bonding to gas, domestic water and central heating. We are getting rid of the electric shower for which I think additional bonding was required.