@Helen3 Thank you for your quick response!
I'm actually doing a market research in central London area comparing other hosts prices and type of accommodations. To be honest you have more connections then me as you know many London based hosts, so i'm getting to know your and others hosts experiences to enrich my knowledge.
Also it is not clear if this 90 nights rules applies on the whole property only or either on single rooms. I'm actually living in my apartment so it shouldn't count as whole property.
do you anything else about that?