Question Author
2nd attempt.
Shaney why don't you occasionally bung a kettle of hot water down the drains, it'll keep,the grease from banging up.
My one and only sewer pipe is under the back patio and if it bungs up ( hija's hair is the main culprit) I just lift the stone sewer lid and wobble a stick about or shove it about, yes it,is also the loo sewer, bung a few buckets of water down with force and hey presto, bobs yer uncle! I am fascinated by sewers, although ours are much more simple than yours. I first learnt when we bought the cottage in Truro and it was bunged with the previous owners nappies. The drain man showed me sewer worms so I could tell if it was getting blocked and showed me how to clear it. Been doing it ever since, but these things don't worry me or make me squeamish.