Can bathroom extractor fan 230 volts be connected to the some bathroom light switch

The light may or may not be 230. If you are in the U.S. it's probably 110.

What city, state and country are you in?

Are you sure that your bath exhaust fan is 230?

Hello
Here we are we need to use the British standard.
All circuit are 230 volts
Thanks

Thanks for clarifying. I can't help about it, but now that you have clarified your circuits, I'm sure that someone else here will come along shortly to help, as we've got several great Electric experts here.

Yes, you can connect the extractor fan to the light switch, so the fan and light come on the same time.

Hey Rick, 120 not 110, not since you were a kid. :)