The AJ100 is the definitive annual record of the UK’s largest architecture practices measured by the number of architects employed in the UK. To be in with a chance of making the AJ100, entrants must complete a comprehensive survey. Start the survey.

After the AJ100 list has been announced, a panel of judges will assess the winner of our category awards. A Gala Lunch will take place to announce these winners on the afternoon of Friday 19 June, 2026 at the Honourable Artillery Company in London.

Once a practice makes it onto the AJ100 list, they’ll have the opportunity to attend exclusive AJ100 Club events throughout the year. These could be lunches or more informal networking, but all will include keynote speakers.