21 Degrees Email Formats

Construction • London, England, United Kingdom • 51-100 Employees

21 Degrees Email Formats

21 Degrees uses 5 email formats. The most common is {first name}.{last name} (e.g., john.doe@21degrees.com), used 50% of the time.

Format	Example	Percentage
{first name}.{last name}	john.doe@21degrees.com	58.7%
{first initial}.{last name}	j.doe@21degrees.com	30.5%
{first initial}	j@greenbuildingstore.co.uk	6.5%

Key Contacts at 21 Degrees

Bill Butcher

Founding Director 21° Formerly Green Building Store

John Gilham

Technical Director

Andrew Mitchell

Managing Director

Phil Strickland

Technical Operations Director

Christopher Joubert

M&A Director

Sarah Taylor

Pmo Director

Company overview

Headquarters	London, England, United Kingdom
Phone number	+448082815021
Websites	21degrees.com greenbuildingstore.co.uk
NAICS	23
Keywords	Insulation, Training, Ventilation, Solar Panels, Passivhaus, Heat Pumps, Battery Storage, Airtightness, Energy Security, Air Source Heat Pump, Low Energy Design, Ground Source Heat Pump, Cpds, Mvhr, Triple Glazed Windows, Fabric First
Founded	1995
Employees	51-100
Socials

About 21 Degrees

At 21 Degrees, we believe our built environment should be designed for optimal efficiency, health and comfort. Our mission is to empower homeowners, architects, and businesses with the knowledge and technology to harness sustainable energy from every building and help safeguard the planet Our specialist products and services include renewable technology such as solar panels, heat pumps, battery storage and energy efficient upgrades such as triple-glazed windows and doors, mechanical ventilation with heat recovery (MVHR) systems, and insulation and airtightness products. Our company’s foundations are built upon the proud history of our combined subsidiary companies including Green Building Store founded in 1995 and award-winning renewable installation company Green Building Renewables. We have been at the forefront of sustainable, low energy building, offering product innovations and services for three decades. And we have helped to support the uptake of Passivhaus in the UK since 2007. In 2010, we completed construction on the UK’s first cavity wall Passivhaus at Denby Dale. Today, 21 Degrees stands as a leader in the energy revolution, driven by our unshakable commitment to challenge outdated systems and champion sustainable living. Every home, business, and industrial facility we touch is not just built to meet expectations – it’s designed to exceed them, setting a new standard for energy performance, environmental stewardship, and human wellbeing. Our world is changing, and the opportunity is now. Change the way you think about energy.

Employees by Management Level

Total employees: 51-100

Seniority

Employees

Entry

Manager

C-Suite

Employees by Department

21 Degrees has 35 employees across 9 departments.

Departments

Number of employees

Funding Data

21 Degrees has never raised funding before.

21 Degrees Tech Stack

Discover the technologies and tools that power 21 Degrees's digital infrastructure, from frameworks to analytics platforms.

Alpine.js

JavaScript frameworks

Storyblok

CMS

Google Tag Manager

Tag managers

Cookiebot

Cookie compliance

HSTS

Security

Open Graph

Miscellaneous

Calendly

Appointment scheduling

Cookie Control

Cookie compliance

Tailwind CSS

UI frameworks

Astro

JavaScript frameworks

Google Analytics

Analytics

Netlify

CDN

Frequently asked questions

21 Degrees is located in London, England, GB.

You can reach 21 Degrees at +448082815021.

21 Degrees was founded in 1995, making it 31 years old. The company has established itself as a significant player in its industry over this time.

21 Degrees has approximately 51-100 employees. The company continues to grow its workforce to support its business operations and expansion.