Colophon

Image credits

Photography on this site is used under Creative Commons licences, graded to the Apex palette. Technical drawings are original works generated for Apex.

The City of London skyline at dusk seen across the Thames — photo by It's No Game, CC BY 2.0, cropped and colour-graded.

22 Bishopsgate under construction rising behind the stone facades of Threadneedle Street — photo by It's No Game, CC BY 2.0, cropped and colour-graded.

Residential towers and construction cranes in the London skyline — photo by Rennett Stowe from USA, CC BY 2.0, cropped and colour-graded.

The Gherkin rising behind the medieval church of St Andrew Undershaft — photo by Fred Romero from Paris, France, CC BY 2.0, cropped and colour-graded.

The City of London skyline rising behind an airport runway — photo by Alexander Baxevanis, CC BY 4.0, cropped and colour-graded.

An archival photograph of a fire door beside a pipe penetrating a compartment wall — photo by Unknown, Public domain, cropped and colour-graded.

An architectural framing plan drawing for a hotel building — photo by Unknown authorUnknown author, Public domain, cropped and colour-graded.

A vintage battery charging room lined with industrial workbenches — photo by Benton, Robert, creator, Public domain, cropped and colour-graded.

A modern civic building interior with tiled flooring and seating — photo by Qasinka, CC0, cropped and colour-graded.

The colour-blocked render and windows of a modern block of flats — photo by Tony Hisgett from Birmingham, UK, CC BY 2.0, cropped and colour-graded.

Accessible platform signage with a wheelchair icon along a covered walkway — photo by Leimanbhradain, CC BY 4.0, cropped and colour-graded.

The red-brick, castellated frontage of a Victorian town hall — photo by Elliott Brown from Birmingham, United Kingdom, CC BY 2.0, cropped and colour-graded.

1960s system-built tower blocks on a UK housing estate at dusk — photo by Miles Glendinning, CC BY 4.0, cropped and colour-graded.

An ornate hotel corridor with patterned carpet and a wall-mounted fire alarm call point — photo by Larry D. Moore, CC BY 4.0, cropped and colour-graded.

A stainless-steel fire door with an overhead closer set into a concrete stairwell landing beside a handrail — photo by Hirho, CC BY 4.0, cropped and colour-graded.

A pale twentieth-century residential tower block standing beside a green-glass clad tower against a clear sky — photo by Elliott Brown from Birmingham, United Kingdom, CC BY 2.0, cropped and colour-graded.

Scaffolding erected against the balconied facade of a mid-rise residential block under a blue sky — photo by Shixart1985, CC BY 2.0, cropped and colour-graded.

Close-up of a heavy steel butt hinge on a perforated fire-door leaf beside a stamped certification plate — photo by Achim Hering, CC BY 3.0, cropped and colour-graded.

A modern grey-brick school building with tall narrow windows above a landscaped riverside path — photo by Sunolafjagtenben-hur, CC0, cropped and colour-graded.

A red-brick Victorian police station with an octagonal corner turret and domed cupola — photo by Elliott Brown, CC BY 2.0, cropped and colour-graded.

Grand red-brick mansion blocks around a landscaped courtyard with an ornamental archway — photo by John K Thorne, CC BY 2.0, cropped and colour-graded.

Rows of palletised intermediate bulk containers and drums stored in an industrial warehouse hall — photo by , CC0 1.0, cropped and colour-graded.

The Portland stone facade of a large civic police headquarters building behind mature plane trees — photo by DAVID HOLT, CC BY 2.0, cropped and colour-graded.

Construction site behind scaffolding, hoist and wrapped floors mid-build — photo by Seb Doe, Unsplash License, cropped and colour-graded.