No Content Set

About us
Amber is a leading international investment manager. For over 15 years, we have mobilised capital into essential, responsible infrastructure.
What we do
We source, finance and manage infrastructure assets for both the public and private sectors, applying an integrated approach throughout the lifecycle of each investment.
Amber develops and invests across a wide range of infrastructure sectors, each characterised by a long-term investment horizon and robust, creditworthy counterparties.
As long-term investors, we recognise the need to consider how a changing world could impact our core business activities and investments.
News and insights
View our latest press releases and insights on key topics from across the business.
Our people are essential to our success. We are committed to building exceptional teams, maintaining our unique entrepreneurial spirit, and building a culture that is inclusive and impactful.

Zeti – Colt Cabs

Low Carbon Mobility

MEEF supported the Green Recovery of the London Black Cab sector by financing zero emissions capable taxis with an innovative and flexible pay per mile platform

Low Carbon Mobility
London, England
Fundig type
Debt £1.1m
financial close
September 2021
Term length
6.5 year loan
Black cab fleet

> 0 vehicles


MEEF has provided finance to Colts Cabs to fund 30 LEVC TX vehicles through an innovative and flexible pay-per-mile mechanism managed by Zeti Limited (‘Zeti’)

Colts Cabs are one of London’s largest black cab fleet operators having been in operation since 1991 with over 800 vehicles. Colts rents the black cabs to individual licensed black cab drivers who meet the TfL fit and proper person test.

The LEVC TX is a plug-in-hybrid with an electric range of 63 miles capable of rapid charging with a small petrol engine to extend the range of the vehicle. The LEVC TX has a number of advantages over the older diesel black cabs, including reduced maintenance costs and improved fuel economy, reducing the cab drivers running costs.

Annual CO2 reduction

0 tonnes

Vehicle reduction equivalent


NOx reduction per vehicle

0.0 %

Sustainable Development Goals (SDGs)

2030 Agenda for Sustainable Development adopted by UN Member States in 2015

SDGs supported:


  • The investment is aimed to tackle the twin dangers of air pollution and climate change 
  • Each cab is forecast to reduce carbon emissions by 3.9 tonnes and reduce NOx emissions by 99.5% 
  • Overall, the 30 cabs will save 116 tonnes of CO2 per year, the equivalent of taking over 105 cars off the road 
  • This project helps to reduce the impact of the London black cab fleet on London’s air quality and support both the LEVC and the taxi sector recover from Covid-19

No Content Set