Hi Can anyone help please. First of all can I say I am fully aware of part P of the Building Regs and it’s constraints. My house does have a main 10mm bonding conductor from the consumer unit onto the gas service pipe and then looped across onto the rising main water pipe with no break in the cable. Bonding in bathrooms, I’ve seen bonding in bathrooms where the hot and cold water pipes below the wash basin have been bonded to each other and then onto the waste pipe if it's metal. Hot and cold pipes to the bath which again have been bonded onto the waste pipe and also onto the leg of the bath if they are metal, but I have not seen an earth wire connecting the two areas of bonding together like I’ve seen in some books. As the same copper water pipes run throughout the house is it necessary to daisy chain every section of bonding together within the bathroom? I do understand that every part needs to be at the same potential, under fault conditions. With the 17 Edition Regs stating that RCDs will be needed in most domestic wiring situations. Can anyone advise if it is still necessary to bond pipes together and then onto the sink top in kitchen areas, assuming they are metal? Long, long ago well before RCDs were around socket outlet faceplates used to have a flyer earth connected back onto the metal box which was sunk into the wall, is this still required with the arrival of RCDs and the fact the fixing screws make contact with faceplate and the fixing lugs of the boxes? RCBOs, can anyone confirm if the fly lead should be connected to earth, because the rcbo has a solid neutral (ie not switched)? Many thanks to anyone who can advise.