It seems to be every March and September. As much as it's good to have the opportunity to get my favourite adverts in a larger format, when it comes to storing these issues, I eventually get sick of them taking up so much space, and throw them out.
But it's made me imagine - what if UK Bazaar always had the dimensions of W magazine? What would that mean on the newsstand? Would it help their sales in any way, or does it only make sense as an occasional cost twice a year, as a means of promotion for their most important issues because it's something no other magazine does?