LAET

Hey there, I suggest you email them directly at admissions@laetottenham.ac.uk.

And if things don't go your way, remember that on results day they still admit students then, so you still have a decent chance if you get the actual GCSE grades you need.

Best of luck!

Yep, what would you like to know in particular?
Upsides that I can think of is how you will always be updated on academic and career opportunities, teachers are well qualified (Oxbridge, etc if that appeals to you, though imo qualifications aren't always an accurate indicator of how well someone may teach) and generally enthusiastic, large student body so there's plenty of people to meet, studious environment is really motivating to discourage slacking and so forth. They also provide relative amounts of study support (eg after school lessons and academic coaching if you need it), as well as support for university applications (esp Oxbridge + Med applicants) and extra curriculars. Teachers encourage you to ask for help and clarification if you need it, which is definitely helpful if you need it.
Downsides are subjective and depends on your current school dynamic (if your school has sixth form). For example, the school is stricter and give less freedom compared to maybe a secondary school sixth form, let's say. You're not allowed to leave the building during break/ lunch until Year 13, and they aren't lenient on behaviour/ punctuality, etc. Also bear in mind that 4 A levels can be a heavy workload at times and you're not allowed to drop until the end of Year 12, so choose carefully and maintain time management. There's also somewhat a level of pressure and competition (not necessarily toxic), which can definitely keep you on your toes and be a good thing to prevent you from slacking, but some may find it overwhelming (and counselling is always full with a waitlist, so if mental health support for you is paramount, it might be good to reflect on this).
Any more questions, feel free to ask!