The rooftop event was held to mark the practice's 45th year in Reading, its move to a new studio at Thames Tower in the heart of the town and the practice's 60th anniversary.
The event took place in The Roost, the rooftop space at the RIBA Award-winning Thames Tower, with food and drink provided by celebrated chef and restaurateur Paul Clerehugh, who runs the Crooked Billet in Henley and London Street Brasserie in Reading.
Director Dave Anderson, who leads the Reading studio, said: "This move is about connectivity and accessibility and having the right kind of environment to present Broadway Malyan as the global practice that we are.
"It is also about making sure that we are investing people who are the major asset of any business. We have a fantastic new studio that encourages collaboration and has helped bring our sector teams together.
"There is also the social aspect as well. The new studio encourages people to be more social and you find that the transfer of knowledge and ideas starts to happen more naturally.
"The launch event was fantastic. The Roost is a great space to break out and meet in the day and then for events in the evening and it was great to catch up with so many friends and colleagues and from the feedback it is clear that this new studio is going to be very good for business."
