I have a venus fly trap, which I've had for about 2 months now. It's
doing very well, and now appears to be putting out a flower. Is this
usual for the UK in winter?

I also have a pitcher planet (nepenthes) which is doing suspiciously
well too.

They are both on an east-facing window ledge in a nice warm
double-glazed (& steamy) bathroom.

Can anyone advise me about how regular I should be feeding these?

cheers

-L