@Lightlyseared They are very tight-lipped. I’ve seen letters written in asking for the information under the Freedom of Information Act and responses saying they don’t have to give that information out. I would guess since it’s the BBC and it’s funded by tax-payers that they don’t want to get into the hassle of “this show costs this much more than that one”. I’m sure it’s more or less fair given the size of its viewership.