I am not sure myself.
But a recent statistic was announced last year that 1 in 3 got an offer for pharmacy for UCL.
That is about a 36% offer rate.
Now its hard to get an actual statistic as to how many pharmacy students UCL has every year as an offer doesn't necessarily mean a student will meet the requirements in August (Results day) or the student will accept a place in UCL.
I do not think this matters to you if you have the required grades and a strong personal statement, but it is important to note that there has been a larger influx of applicants for Pharmacy for UCL compared to last year, so offers may be quite tough to dish out.