U.K. Environmentally-Friendly

Mitie Group

Market Cap: UK£1.9b

Provides facilities management and professional services in the United Kingdom and internationally.

Serco Group

Market Cap: UK£2.2b

Provides public services in the United Kingdom, Europe, North America, the Asia Pacific, and the Middle East.

MYCELX Technologies

Market Cap: UK£6.3m

A clean water technology company, provides water treatment solutions to the oil and gas, power, marine, and heavy manufacturing sectors in the Middle East, the United States, Australia, and internationally.

Water Intelligence

Market Cap: UK£52.4m

Provides leak detection and remediation services for potable and non-potable water in the United States, the United Kingdom, Ireland, Australia, Canada, and internationally.

Rentokil Initial

Market Cap: UK£9.3b

Provides route-based services in North America, Europe, the United Kingdom, Asia, the Middle East, North Africa, Turkey, and Pacific.

REACT Group

Market Cap: UK£11.7m

Provides specialist cleaning services in the United Kingdom.

Majestic

Market Cap: UK£23.2m

Engages in the recycling of catalytic converters, telecom equipment, and printed circuit boards scrap.

EARNZ

Market Cap: UK£8.0m

Provides heating maintenance, new energy services, and boiler refits across residential and commercial properties.

Clean Invest Africa

Market Cap: UK£1.0m

CoalTech LLC offers collecting and recycling services of waste coal fines using technological solutions.

Drax Group

Market Cap: UK£2.4b

Engages in renewable power generation in the United Kingdom.

Hydrogen Utopia International

Market Cap: UK£4.4m

Develops and utilizes non-recyclable mixed waste plastics to hydrogen technology.