If you change the FCU for an RCD and put an IP44 switch feeding the Towel radiator that would be ok wouldn't it? However the RCD needs to be tested on a regular basis so the server room will need to be powered down monthly.
I did wonder about replacing the flex outlet with a combined switch and isolator, but it is a wet room and does get splashed a bit, even though it is more than 1.2m from the water outlet. Also, the idea of someone switching it on whilst wet from the shower, sort of goes against the grain a bit. But that is probably because I am old school, and my electrical qualifications are from the early 1980's. Things were different back then......
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