if you ever need more stainless steel taps in the future I got mine from Plumbhq we have some really nice brass ones but they also so stainless silver taps, super good quality. think I mentioned this website in my last post about taps but 100% would recommend.
I'm not sure if Plumbhq do basins's you'll have to have a look but if you need any new taps etc I got some really nice brass ones at such a decent price on there, always so nice having a fresh bathroom with a new sink and taps!
yes I have had an experience with the shower power booster pump, worth the money I would say. It was the main brand of booster pump that I had heard of when shopping around, maybe see if you can get it any cheaper somewhere else? also if you're not sure about installation ask a plumber you don't want to create more issues
We had to get drainage specialists out to help us with a cess pit a few years ago. It tends to happen a lot in rural areas i think. Really couldn't recommend anyone else than [commercial link removed] they knew exactly what they were doing and they offer a lot of off main services if you are having issues worth looking into.