hi, i've just finished my a levels and i'll hopefully be doing english at warwick in september! in my experience, russell groups other than oxbridge really don't put that much emphasis on gcses as long as you've passed everything, personal statement and predicted grades are what matter!
in terms of work experience, i really struggled finding anything english related for my personal statement, it's v difficult to find any in that field. my advice is to start submitting your writing to litmags if you haven't already, as being published looks great on any personal statement, especially for english!
as for books, i can only really speak for english (i did sociology at as level but got bored haha), but there's honestly no criteria for what you should read. my personal statement balanced sappho, austen, plato, etc with academic articles. i honestly think the best thing you can do in year 11 summer is make a jstor account and start reading academic articles around english and sociology to start refining your particular areas of interest in the subjects.
if u have more questions lmk, i know it's easy to say but try not to stress about your gcse results now, you absolutely have a shot at russell group no matter how you've done
