PHC, previously The Adult Orphan Institution (AOI), opened at 32 Mornington Place (Hampstead Road) with 16 pupils. It was founded by Princess Augusta and Mrs Sophia Williams, to educate orphaned girls whose fathers had been in the Services or Church, and had died.
The school moved to 11 St Andrews Place, Regent's Park, designed by John Nash.
Queen Victoria became Patron of PHC
Princess Helena, third daughter of Queen Victoria and Prince Albert, became President of the College.
The AOI became Princess Helena College for Young Ladies and High School for Girls.
Name shortend to Princess Helena College.
Prince Leopold of Albany laid the foundation stone for the new School to be built in Ealing. The stone is now laid within the walls of the present School underneath Arches.
PHC moved to Ealing from Regent's Park, and was officially opened by Princess Helena.
The Royal Charter was granted.
The marble bust of Queen Victoria was acquired.
Lacrosse was introduced (first girls' school in England).
PHC Old Girls' Association (now PHC Alumnae Association) was started.
PHC’s motto adopted, ‘Fortis qui se vincit.’
PHC's 100th birthday.
Princess Helena died aged 77. Princess Helena's daughter, Princess Helena Victoria became President.
PHC moved from Ealing to Temple Dinsley.
The House system was introduced: Gloucester, Windsor and York.
HRH The Duchess of Gloucester succeeded Princess Helena Victoria as President.
HM The Queen became Patron.
The Dower House was refurbished and visited by HRH Duchess of Gloucester on June 1st and the Princess Alice Hall was built.
PHC celebrated its 175th anniversary with a service at Westminster Abbey.
HRH Princess Alice, Duchess of Gloucester died and was succeeded as President by her daughter in law, the present Duchess of Gloucester
New Science Centre and Art Centre opened by HRH the Duchess of Gloucester.
The Orchard replanted.
PHC representatives celebrated the Queen's Diamond Jubilee at the Patron's Lunch on The Mall.
Plans developed for a new Performing Arts Centre.
Visit of HRH The Duchess of Gloucester to dedicate the foundation stone for the new PA Centre, plant a rose in the replanted Rose Garden and to open the Heritage Wall.
PHC announces it will welcome boys from September 2019 - a new co-educational era begins.