SWMBO wants to put a ceiling fan in the conservatory ... one option would be to connect feed from the existing light ...
As it would still need existing light to work ... would therefore need a pull switch with a changeover switch ... posn 1 fan only posn 2 light + fan
Wall switch would provide overall on/off
The fan will have its own remote control so that allows 3rd option of lights only.
Can you get a pull cord change over switch.?
Would be very difficult to get at wiring other than using existing feed.
I know you can get fans with lights ... but that is not what she wants.