New design and interventions for a historically significant site

St Cybi’s Church, Holyhead, is a Grade I-listed medieval church of national significance, set within the walls of Roman fort and scheduled monument, Caer Gybi. Adjacent to it lies Eglwys y Bedd, a Grade II-listed 14th-century chapel.
The site is archaeologically rich, with evidence spanning Roman, early medieval and later periods. Recent investigations uncovered extensive burial remains and structural evidence around Eglwys y Bedd and the wider churchyard, demonstrating a long continuity of use and requiring careful integration of design with archaeological discovery. These findings necessitated a highly responsive and adaptive approach to the design and construction process.
Working collaboratively with PegwA, the reordering of St Cybi’s Church has focused on increasing flexibility of use and broadening the means of worship, enabling the building to better serve both congregation and community. The project has transformed the interior, reinstating significant historic elements such as stained glass and tiled finishes, while improving accessibility through floor levelling and the introduction of discrete internal ramps. Environmental performance has also been enhanced, with the introduction of low-carbon systems including underfloor heating, air source heat pumps and photovoltaic panels on the nave roof.
At Eglwys y Bedd, a complementary programme of works supports the wider site. A contemporary extension, formed from a glulam frame and clad in zinc, provides new kitchen and WC facilities, alongside flexible community space. The historic portion of the chapel has been thermally upgraded with a breathable lime based internal insulation and roof improvements, ensuring long-term sustainability while preserving its character. A new entrance screen creates a clear and welcoming threshold, opening the building for everyday use. These additions significantly enhance the functionality of the chapel and enable it to operate as a community hub, supporting activity across the entire site.