Indian Passport Renewal in UK - Photo Printing

Hello, I have an appointment at the Indian visa and consular centre at Goswell Road, London for my Indian passport renewal next week and am looking for a photo studio to print 2" x 2" photos that are typically required for Indian passports. Can someone please suggest a photo studio near the Goswell Road consular centre which prints instant photos for Indian passports? I am aware that there is a self-operating photo booth at the centre but I am told the machine remains out of order often, so do not want to take a risk.

Can anybody who has been to the Goswell Road centre suggest on this please? I have an appointment in 2 days, appreciate any input.