Una is originally from Belfast but spent many years studying and working abroad before returning to Ireland to work and set up practice in Dublin. She obtained a Bachelor of Arts Honours degree B.A. (Hons) from the University of Kingston-Upon-Thames in England, a Bachelor of Architecture B.Arch (Hons) from the University of Newcastle-Upon-Tyne in England, completed her professional studies in University College Dublin and was elected a Member of the Royal Institute of the Architects of Ireland (MRIAI) in 2001.
She has also been registered in the Register for Architects under the Building Control Act 2007 and may legally use the title Architect and she is an Architect Accredited in Conservation Grade III and a Member of Integrated Project Management (IPM).
She spent a year working in San Francisco, specialising in housing design, construction and interiors and she was a founding member of the Bay Area Young Architects (BAYA). She spent a further year working on the detailing and construction of the 5 Star Hotel Arts, working on site in the Olympic Village of Barcelona, after the Olympics but before the Olympic Village area was completed. In Dublin, Una worked for BDP, extensively on the Connolly Station refurbishment project, the competition-winning offices for Fingal Co. Council along with Bucholz McEvoy Architects, the extension to Marks & Spencer Mary Street, the refurbishment of AIB Bank Terenure amongst many other prestigious projects. Prior to starting her own practice, Una worked exclusively with Anthony Cotter Architects on the new-build of the large Air-Rights Office Building over Connolly Station, including the fit-out of the offices for McKeever Rowan Solicitors and Susquehanna Ireland Ltd.; the entire second floor of the building.
McQuillan Architects was set up as a Ltd. Co. in 2001 to meld the disciplines of art and business, whilst creating beautiful environments for people. In the intervening years, Una has undertaken many prestigious retail, fit-out and refurbishment projects, including many historical buildings; The Law Society of Ireland being one of the most notable.
Since then, Una’s expertise has made her a natural commentator and media presenter. To date she has worked on the series ‘About the House’, for Ireland’s national television station, RTE 1, where she was the co-presenter. Una also regularly appears in the Irish press as an expert on interiors, architecture and the industry.

GERRY CAHILL AADipl FRIAI RIBA was educated at University College Dublin and the Architectural Association London.
Qualifying from the AA in 1975 he worked on housing and urban renewal projects in London. On his return to Dublin in 1978 he was awarded the Cement Roadstone Housing Research Fellowship in University College Dublin (UCD). This led to the publication of BACK TO THE STREET (1980) proposing how the Liberties – a Dublin Inner City neighbourhood – could be regenerated.
Since the early 1980s he has been principal of GCA GERRY CAHILL ARCHITECTS – a practice that established a reputation for the design of high quality projects in multiple sectors . GCA has received numerous awards for its work from the Irish Concrete Society, the Architectural Association of Ireland (AAI), the Royal institute of Architects of Ireland (RIAI) and OPUS including in 2007, the RIAI SILVER MEDAL FOR HOUSING. In 2001 Gerry Cahill was personally given the LORD MAYOR’S AWARD for his contribution to Dublin.
A lifelong commitment to energy conscious design saw Gerry Cahill appointed in the 1990s to the board of the charity ENERGY ACTION and subsequently to the board of the statutory SUSTAINABLE ENERGY AUTHORITY OF IRELAND (SEAI) from 2001 to 2007. GCA is also a member of the EUROPEAN GREEN CITIES NETWORK.
Gerry Cahill has taught at the UCD SCHOOL OF ARCHITECTURE in undergraduate and postgraduate courses since 1978 and has lectured internationally in Europe and North America. In the late 1980s he co-ordinated and edited DUBLIN CITY QUAYS : PROJECTS BY THE SCHOOL OF ARCHITECTURE UCD an exhibition and publication which is acknowledged as influencing the renewal of the capital city.
Among his ongoing teaching roles he is currently co-ordinator of the UCD STUDY ABROAD PROGRAMME to encourage international students to select Ireland as a place of further learning and inspiration.
Gerry Cahill’s drawings and sketches have been exhibited by the RIAI and published in the WHOSEDAY book in 2000. His sketchbooks remain on display since 2010 as part of THE SECRET LABORATORY a travelling exhibition organized by the University of Ulster. In 2008 GCA GERRY CAHILL ARCHITECTS represented Ireland with the audio visual exhibit SANCTUARY + CONGREGATION as part of the LIVES OF SPACES installation at the 11th ARCHITECTURAL VENICE BIENNALE In Italy.

John is originally from Galway, he graduated from the Institute of Technology Carlow, with a Distinction in Architectural Technology, and then went on to further his studies in Edinburgh. There he graduated with a Bachelor of Arts in Architecture from Edinburgh College of Art.

John worked with Richard Murphy Architects whilst in Edinburgh and was involved in many commercial scale projects, including the construction of the University of East London, Stratford Campus. At RMA, he was a part of the model making team, which included the modelling of the Haymarket re-development site in Edinburgh.

With an interest in travelling, John went to Sydney for two years. There he gained employment initially with Humel Architects in Dee Why, where he worked mainly on residential aged care facilities, before moving to Architects+Partners in St. Leonards, where he was involved in a large scale residential building, model making, architectural competitions and company marketing.

John takes on various roles including managing the office as well as working on all architectural projects.