That's nothing, Thames water found a two hundred and fifty meter long fatberg a couple of years ago: https://corporate.thameswater.co.uk/Media/News-releases/Mo

That's nothing, Thames water found a two hundred and fifty meter long fatberg a couple of years ago: https://corporate.thameswater.co.uk/Media/News-releases/Monster-fatberg-longer-than-two-Wembley-football-pitches-clogging-up-Whitechapel-sewer https://corporate.thameswater.co.uk/Media/News-releases/Mons... Pan and wok cooking is more likely to be a culprit than the deep frying done by fish and chip shops; with the latter the used oil is drained, collected and reprocessed into bio fuels.