Sowerbutt's Bath

Brendan Bracken perched uncomfortably on the toilet in the cramped first-floor bathroom at No 10. To his right, the cast-iron bath-tub, which had seen many famous occupants, was almost full to the brim.
https://www.amazon.com/Colour-Red-Deal-Sowerbutt-Novels-ebook/dp/B00RL9FGKM?