would be a good idea to resit - so you meet the current requirements. luckily i applied last year, i got the same as you, got 117/120, 90/90 and then 70/90 on hamlet and lyrical ballads module.
i was happy with the A overall but for loads of my friends doing english lit, they got reallly low on that module, like a guy i know got an E (AB in the others) and a guy who got A at AS got AA and then a U in that module! generally, people got lower in this module so a resit should straighten it out - shouldn't be too much work either, as you already know the books and can have chance to look at feedback for those exams if you want.
you never know, if you apply and they like you, they might not even ask for the A*, seeing as you already have ur results!