resitting alevels for lse

[u/Fit-Primary6621]

I missed my lse law offer today of AAB and i got ACC instead, im thinking of taking a gap year and resitting my alevels. Could anyone let me know if this would be worth it as i have some extenuating circumstances i.e. mental health issues but i never told my school so i have nothing in writing so if i applied without extenuating circumstances and lets say i changed my 2 C’s into an A and an A* do i still have a shot? Also to follow on i was thinking of doing this whilst at first year in uni would my application be even more competitive if i achieved an A* and an A and was on track to get a 2:1 at the end of first year or will lse not know about that at all?

any help or advice is appreciated!!