Thank you all that have provided helpful comments. I’m waiting to get approved for the London Boaters group on Facebook, so thought I’d try here (despite the amount of being laughed at when I’m clearly at a loss at what to do).
I’m aware it’s going to be expensive, but as I say, I work a lot, am often away and the boat is my full rime residence so can’t go long periods without shower facilities. I was honestly just trying on here to see if anyone was looking for the work, nothing else. I have no idea how to refit flooring or fix plumbing and will only make it worse.
PS. I have found workmen to come on short notice even on Sundays, so don’t know what the hilarity is!