The Colour of Buses In The UK & Ireland

The map above comes from bustimes.org (click for interactive map) and shows the different colours of buses across the UK and Ireland.

Heres’ why:

Local or Regional Branding

Each bus operator typically uses distinct colours to represent its brand identity or the area it serves.

For example, Transport for London (TfL) mandates red buses across London, a unified colour scheme for instant recognition.
In contrast, Stagecoach buses use orange, blue, and white, while First Bus uses pink and purple, and Arriva often uses aqua blue.
Local authorities or regional transport bodies sometimes specify colours to match the area’s transport brand, for instance, Greater Manchester’s Bee Network uses yellow and black buses.

Deregulation and Competition (outside London)

Since the 1986 deregulation of bus services in England, Scotland, and Wales (except London), most areas have private operators competing on routes.

Companies therefore use distinct liveries to stand out and attract passengers.
In contrast, London retained a regulated system under TfL, enforcing uniform red buses for all operators.

Historical and Legacy Reasons

Many colours reflect heritage liveries of older municipal or regional transport systems.

For instance, Glasgow’s orange and green, Dublin’s green (Dublin Bus), or Belfast’s pink/purple (Translink Metro) hark back to earlier local authorities or transport boards.
Even after privatization or rebranding, some operators kept those colours for public familiarity.

Different Systems in the Republic of Ireland

In Ireland, buses are largely run by state-owned companies, so the colours reflect national or city branding rather than competition:

Bus Éireann: red and cream (national network)
Dublin Bus: green and yellow (city)
Go-Ahead Ireland: uses purple and white (franchise operator under the National Transport Authority)

The National Transport Authority (NTA) has started standardising designs, new buses in Dublin now use a teal and yellow “Transport for Ireland” livery.