Since the launch of ULEZ in April, NOx (Nitrogen Oxide) emissions in London has reduced by 31%, protecting Londoners from harmful levels of pollution.

The ULEZ involves around 100,000 vehicles a day in London which do not meet the emissions control limits.

Our approach

In order to enable the ULEZ to go live earlier this year, over 1,400 changes and requirements were needed to improve underlying systems and processes. We delivered a full-scale upgrade of the IT infrastructure and improved many of the processes including camera capture and detection, billing and payments, customer contact and automated enquiry services, database and evidence storage and the enforcement engine.

We understand, from years of providing customer facing collection services, that a variety of channels for customer contact and payment collection results in higher collection rates. As part of the ULEZ go live, working with Transport for London and partners, we introduced a mobile pay app allowing customers the convenience to pay at a time that suits them.

The impact

We take over 4,000 calls and handle over 12,000 payments a day. This all adds up to the 75% early compliance rates for ULEZ and the 20% reduction in NO2 emissions.

Explore our solutions


Digital transformation

We’re helping governments, citizens and communities solve our most complex challenges through digital and technology-enabled business transformation.

Find out more

Central government services

We're delivering solutions that keep the UK government running and improving services to the public, during uncertain times.

Find out more

Local government services

We're providing services and solutions that improve outcomes and save money, so councils can focus on what matters in their communities.

Find out more

Need help finding the right solution?

More of our work

Gas boiler engineer

Central government

Keeping UK homes and businesses gas safe since 2009

Back in 2007, the Health & Safety Executive (HSE) conducted a review of the domestic gas safety regime and identified a case for change.


Insurance and pensions

Bringing affordable insurance to homes at risk of flooding

An innovative solution to improve the availability and affordability of flood insurance, likely to benefit 350,000 households.

UK city


Supporting Britain’s move to a lower carbon economy by digitising energy

Installing up to 27 smart meters a minute across the country, allowing homes and small businesses to monitor energy consumption.

London, UK at night with moving vehicles

Central government

Helping to keep London moving

Working on behalf, and with, Transport for London, we manage the London Congestion Charging scheme.

How can we help your organisation?