Just been trawling the net, and apparently in 2009 there was a statement to say utrogestan was not to be recommended for HRT treatment in Scotland.
But, also Tayside Health board ‘s current HRT recommendations, are for Utrogestan only to be prescribed by meno specialists from clinics and are not recommended for GP' s to prescribe as first line treatment. There doesn't seem to be anything more recent than that, or more broadly, cross countrywide. So not really sure what info your GP is going on.
I am hoping my GP doesn't know yours!!!