Thanks for the tips guys, much appreciated :)
Just wasn't sure how friendly the Zinsser was with regard to a different topcoat but advice noted and will crack on!
And yep, here's hoping the new colour gets the appropriate approval :lol:
Posted this in the your project section but probably be more relevant here...
Recently decorated bathroom with Zinsser perma-white satin. Finished up and was quietly chuffed with the job but other half isn't feeling the love and after a week of dropping hints has decided she wants a bit more...