Thanks everyone for the replies. I believe I did see a FOIA request for UCL, though for 2016, 2017, 2018 so things might have changed; if I remember roughly 40ish% of those received offers had fm, and the other 60ish% didn’t, for straight economics. However, I’m not sure how accurate these figures are today, otherwise it seems it doesn’t seem to advantage you much in terms of application.
Also, is it possible to write a personal statement for something like economics and economic history at lse or land economy and Cambridge but then still apply to economics elsewhere or given the competitive nature of the course, would that not be possible (I.e. they are looking for tailored personal statements).