Nope a 36 is a three... I'm always dead confused when it comes to buying boots online... In shoes I'm more often than not a 37 but in boots I'm usually a 36.5 because they tend to come up larger. It honestly varies so much from brand to brand and even within the same brand, from style to style sometimes. I have Hobbs' boots in a 37 and Hobbs' ballet flats in a 36... I guess I could try the 37 and hope the 36 comes back into stock if they run big... It'd be handy if Asos had customer reviews on stuff - like Boden does - cos that's usually a big help... Ah, well... Plenty more glorious boots around...
:)