William Matthews Associates is an architectural practice established in 2013 and based in Borough, London. 

Prior to starting the firm William Matthews was an Associate at Renzo Piano Building Workshop in Paris. During his time there he completed a variety of internationally recognised projects such as the Beyeler Foundation Basel, Potsdamer Platz Berlin and the Modern Wing of the Art Institute of Chicago. 

From 2001 until its completion in 2013 William led the design team for the Shard in London. 

Given the experience within the practice all types, scales and locations of projects are undertaken. Current and completed projects range from a handcrafted kayak for Wallpaper* Magazine to a feasibility study for a 280m tall £600m office development in the City of London. 

In May 2014 the practice won its first competition: the renovation of the Union of Bulgarian Artists in central Sofia. 

In late 2015, in collaboration with Ney & Partners, the firm won the Tintagel footbridge design competition. The team was one of six shortlisted from 137 entries received from all around the world. 

In 2017, the practice was shortlisted for the Ross Pavilion competition in Edinburgh, working in collaboration with Sou Fujimoto Architects.