Grey Coat Hospital School admissions policy here
I think from my reading of it that, after the spaces for girls gifted in languages have been allocated and spaces for girls who are CofE worshippers have been filled, there are usually about 20 "open spaces" of which the first priority is given to LAC / previously LAC. But I wasn't 100% certain that every year there are "open spaces"...?
Background: DD is adopted, so would get priority in most schools' admission policies, but this one is rather more complicated than most, so I wanted to check whether she would almost definitely get in or not