I can't seem anywhere else (currently active or even from a quick glance, in Area51?) more closely related than here to ask this question. I actually intend to answer it myself, as an info resource for the benefit of the Internet when people google or search on stackexchange.
It's this:
'Are there any non-chlorinated pools in London?'
I intend to compile rare information for it and it's of course related to fitness in a general way, but if you guys deem it not related enough to it in terms of physical training then I'll not post it but try and find somewhere else suitable to post it on the Internet.
Thanks