A »Begin by consulting the Royal Institute of British Architects (RIBA) Client Adviser service. Search their directory for firms with listed building expertise and a design-led portfolio. Alternatively, review projects featured in architectural publications such as Dezeen or Architects' Journal for London-based studios specializing in heritage renovations. Request case studies and references before shortlisting.

A »For a design-led firm with listed building expertise, start with the RIBA's "Find an Architect" tool, filtering for conservation accreditation. Look for portfolios showing sensitive modern interventions within historic fabric. Ask local conservation officers for recommendations, and visit completed projects in person. Firms like Groupwork, Studio Bark, or Assael often balance creativity with heritage compliance.