Rose Hardy, Head of John Lyon School

A warm welcome to our Lyonian Association website. Lyonians are the School’s community of alumni – Old Lyonians and Old Quaintonians, pupils, parents/guardians, staff, governors and friends of John Lyon. The Lyonian Association exists to build a vibrant and lasting community for the benefit of you and the School.

We provide opportunities for you to connect and keep in touch with each other and John Lyon through reunions, social gatherings, key events in the School calendar, networking opportunities, careers talks and mentoring, fundraisers and much more besides.

If you have not done so already, I encourage you to join the Lyonian Association now to find and network with friends and receive the latest news and updates from our Harrow-on-the-Hill, central Harrow and Sudbury Fields campuses. Please do send in your news, too. We would be delighted to keep in touch with you and your updates would be most welcome.

The giving nature of Lyonians today chimes very well indeed to our heritage and the era of John and Joan Lyon, our founders, who established the School for the benefit of the local community. I am immensely proud of our community and especially thankful for your engagement and support through your kind and selfless contributions, whether through generous donations and making gifts, giving up time to supporting pupil enriching opportunities or helping organise events.

I look forward to seeing you at an event on campus very soon.

Stet Fortuna Domus!


The Association focusses on three main aims:


To support the work of the Lyonian Association in maintaining Alumni links at the Prep and Senior School with their former classmates and encourage Community involvement in School activities, events, news and achievements through the network.

Click here to find out more.

Careers and Mentorship

To invite Old Lyonians to offer time, expertise and insights drawn from their professional and personal lives to current pupils and younger alumni. These are typically through a programme of career talks, a range of work experience placements and the opportunity to be involved in mentoring pupils.

Click here to find out more. 

History and Heritage

To preserve archives across both the Senior School and the legacy Old Quaintonian archives from the Prep, previously Quainton Hall School, which house a wealth of material relating to the School, and representing a repository of shared memories of pupils, alumni and staff.

The strength of the Lyonian Association lies in the enthusiasm, experience, and support of its members building unique partnerships based on our connections.  We invite you to be part of the Association to stay connected, expand your networks, benefit from careers support and to stay in touch with the School.

To become a member of the Lyonian Association and receive updates on all our Alumni and Development activities, register your details here.


Join our LinkedIn Networking Group of likeminded Lyonians. Here, you will be able to network, reconnect, socialise and share pertinent information with other members.

Want to know more? Please contact our Alumni and Development team by emailing [email protected] or by calling 020 8515 9449.