The upper middle classes clamour for their DS to get to the right school ! - Tiffin would be the last one on my list, stoney broke it will be nothing more than an exam factory as their debts increase by the week
My son was one of ten from his school who sat the Tiffin exam. None of these children come from upper middle class families. I think you'll find the upper middle class try for the school across the road (KGS).
Many families cannot afford private school fees and go for Tiffin instead.
From the outside, it does look like Tiffin is in a financial pickle. DS was offered a place at Tiffin but after some sleepless nights, I decided that it was not the right school for him.