Next room on the hitlist is the bathroom, which is painted with a soft sheen bathroom paint.  What do I need to do to this to paint over it?  I'm guessing it maybe a latex based paint but not 100% sure.  It's kind of rubbery and in places where it has been chipped it can be peeled a bit like pulling dried wood glue from your fingers (something  I've always found oddly satisfying!)

I'm guessing that it is too shiny to just throw a coat of emulsion onto, but not sure it would sand particularly nicely either

It doesn't peel easily, it comes off in fingernail sized bits if you pick at it.

Don't know what I was thinking painting the walls in soft sheen paint.  Guess I must have been drunk  

I'll give the zinsser a try.  Thanks dude

+1 to Zinsser.

Someone recommended it to me for use over a shower where the paint was getting wet and kept peeling off. Zinsser seems to be much more resistant than the brand name emulsions I tried before.