Thats what I was thinking got my 6382 booked for April, anyway back to the job in hand as stated above, tns supply,6 way Wylex cu with plug in mcbs, dodgy looking earth from met to cu solid green looks to be about 4m/m, can replace this, equipontial bonding to gas and water in 10m/m.
Options: lighting circuits are seperate, I don't suppose any one makes a plug in rcbo, could put in a stand alone rcd on the upstairs lighting circuit but would I possibly have any problems with borrowed neutral on landing two way switch.
Old decommisioned shower circuit 6m/m could be utilsed to feed bathroom lights, at present stand alone seperate breaker from wylex cu, could be replaced with stand alone rcd.
Put local fcu rcd in airing cupboard inside bathroom which also houses combi boiler which has no supplementary bonding.
Thanks again