Patience is a virtue...
...Anyway. In order to get onto the degree a placement is "beneficial". Your application will look better if you have some sort of shadowing or experience in pharmacy. However, you should not really be at a disadvantage if you don't because not everyone gets such experience.
However, if you want to get a decent prereg you need prior experience. I recently heard that a lot of multiples look for experience and CPD because the number of applicants has increased but the number of prereg places is decreasing.