HI there, i have a question about my drain (old drain pipe) i have been having blocked drains every since the council have renewed the roof gutters cast iron down pipes and cladding .the drain cctv guys said i have a kidney plate down my drain pipe and it needs to dug up but i don't know what a kidney plate is and when work was on going the workers broke the drain cover and smashed the old cast iron pipe off with a hammer my question is is the kidney plate part of the old cast iron drain down pipes i am owner occupier and the counsil say i will need to pay my quart share of bill to dig up the drain to get it out but im barely making the mortgage payments at the moment never mid another bill maybe created by them removing the old pipes and guttering anyone any info or help on this gha say there not to blame and i have to stump up nearly 500 quid to fix the prob all info gratefully received