Climbers scale Pollard Thomas Edwards Architects' HQ - slideshow
The close of London Festival of Architecture was marked by Pollard Thomas Edwards architects (PTEa) with a day of climbing.
Brave souls were invited to clamber across a circuit around their London headquarters.
Over 100 people visited the practice's Victorian timber mill HQ to take part in a 'buildering' circuit around the wharf building.
The event was organised in partnership with The Castle climbing centre.