For installers, contractors & public sector
Partner with GLR.Deliver retrofit at scale.
From the MCS Umbrella for independent installers, to sub-contract capacity for national rollouts, to joint bids on public-sector frameworks - we partner with the people building the UK's low-carbon estate.
2,000+
installs delivered
30+
umbrella installers
12 yrs
MCS certified
UK-wide
regional coverage
Who we partner with
Four ways we work together.
Whether you're a one-van installer or a Tier 1 contractor responding to a regional retrofit bid, we have a model that works - built on shared standards, not shared risk.
Independent installers
Get installs MCS-certified under our umbrella while you focus on the job.
Housing providers
PAS 2035 retrofit at scale - coordinated, audited, signed off.
Main contractors
Sub-contract specialist measures: heat pumps, EWI, solar, insulation.
Consultants & LAs
Joint bids, framework calls and DPS responses for retrofit programmes.
MCS Umbrella Scheme
Get installs MCS-certified under our scheme.
MCS membership is expensive, slow and admin-heavy for independent installers. Our umbrella lets you deliver MCS-certified heat pump and solar installs without holding your own membership - fully compliant, BUS-eligible, audit-ready.
- 01
Onboarding
We review your work, insurances and competence - usually inside 2 weeks.
- 02
Job notification
You raise installs through our portal. We pre-check the design pack.
- 03
Sign-off & MCS
Our certifier signs the install. The customer's MCS certificate is issued under GLR.
- 04
Aftercare
Customer-facing aftercare is shared - you stay the technical lead, we hold the standard.
Heads up: We only umbrella installs we'd be happy to certify ourselves. Pre-qualification is honest and fast - most installers are onboarded in under two weeks.
Pick a model
Three commercial routes.
MCS Umbrella
Most popular- No MCS membership fees
- Use our PAS 2035 process
- Customer certs in days
- Audit support included
Sub-contract
- We win, you deliver
- Day rate or fixed price
- Volume work, year-round
- Joint site teams
Framework / DPS
- Public sector access
- Joint bid capacity
- Lot-level partnerships
- Reference projects shared
Backed by the standards that matter
Partnerships team
Let's see if we're a fit.
Tell us about your business and what you're trying to deliver. We'll come back inside two working days with a clear answer.