I wouldn't bet on her been in it. This is the usual type of rumour that does the rounds. I mean if I believed and posted half the rumours on Lucy Pinder I read and get sent to me. All I do all day is be typing them out for everyone.
Want to hear the latest one that had me really laughing. Lucy's about to do a full nude spread for Penthouse LMAO!
Now what I usually do with rumours like these is try to get something off the people in the know. You could try to ask Adele herself, if you know a way of contacting her. She might let something slip if you do it right. Then there are other ways too, try people connected to Adele in some way. Try a real good search through the TV stations press releases or even sometimes you can find future contract rumours for shows. But it's not a quick process and takes quite some time. You might even get beaten to the news first, but if you are the first you do feel happy to beat everyone.
But I do think it's just another fake rumour and here's why...
As most young people don't remember Linda Lusardi doing page3. Adele is fresh in the mind still. Especially as I believe the Daily Sport still show topless pictures of her. Also the amount of full nudes and open leg shoots she's done will hinder her. As many of these are still in circulation. These would be a problem with the time the show goes out. This is the type of thing TV companies think of. Glamour modelling is a accepted thing now days. But the nude work and such still raises eyebrows in the TV world.