Trouble here! Zoomup says both pipes disappear into the concrete floor, so both should be assumed to be extraneous conductive parts, and BS7671 says both should be bonded. The Gas regulations say only the consumer side of the meter should be bonded whether extraneous or not. Do the gas people know about electricity, well that is for you to decide? Insulated joints are irrelevant here, and PTFE tape does not insulate threads, it simply fills the voids stopping the spiral leak path. In any case the risk is probably low.

Trouble here! Zoomup says both pipes disappear into the concrete floor, so both should be assumed to be extraneous conductive parts, and BS7671 says both should be bonded. The Gas regulations say only the consumer side of the meter should be bonded whether extraneous or not. Do the gas people know about electricity, well that is for you to decide? Insulated joints are irrelevant here, and PTFE tape does not insulate threads, it simply fills the voids stopping the spiral leak path. In any case the risk is probably low.