It is directly between Earl's Court and Gloucester Road stations, both served by the District and the Piccadilly lines.
Many of the tutors at Collingham are expert academics, who join the school after professional careers in their field.
Pupils come from a range of academic abilities and backgrounds, with many joining from public schools.
According to the Good Schools Guide, "You go to Collingham for two things - the academics and the sense of being independent while, in reality, being nurtured and carefully monitored.
The level of support given to students is exceptional, reflected in a growth of confidence and the desire to succeed.