Cavity Wall Insulation Grants for Homes in London
🚩 Benefit claimants only: Get ECO4 or LA Flex funding to insulate your home in London
✅ It’s Fast, Easy & 100% FREE.
Here’s how to get started with your grant
1. Check the Qualifying Criteria – You must receive a qualifying benefit (e.g. Universal Credit, Pension Credit, Income-based JSA/ESA, Housing Benefit, Tax Credits) and live in a suitable property with cavity walls and a low EPC rating (typically D or below).
2. Click “Check Eligibility” – Fill in our quick 60-second form.
3. We’ll confirm your grant – If you qualify, we’ll handle everything: survey, paperwork, and installation – 100% free of charge.
No cost. No obligation. Just a warmer, more energy-efficient home.
💡 What Is Cavity Wall Insulation??
Many London homes built after 1920 were constructed using two layers of external brickwork with a narrow gap – or cavity – between them. While this design helped prevent damp from reaching internal walls, it also allows significant heat loss through the air gap.
Without insulation, up to 35% of a home’s warmth can escape through uninsulated cavity walls.
To prevent this, we inject energy-efficient polystyrene beads or foam insulation into the cavity. These materials fill the space, reducing heat transfer and helping homes stay warmer in winter and cooler in summer.
The result is lower heating bills, improved energy efficiency, and greater year-round comfort – all without major disruption to your home.
- Completed in 4 Hours
- Minimal mess—external holes plugged & colour-matched.
- 25-year CIGA guarantee.
Who Qualifies for a Free Cavity Wall Insulation Grant London?
Property Type
You own or privately rent (with landlord consent).
Qualifying Benefits
Universal Credit, Pension Credit, Income-based JSA/ESA, Housing Benefit, Working/Child Tax Credit.
EPC Rating
Band D–G (common in pre-1990 London homes).
Location
Any postcode in London & Camden, Hackney, Islington, Greenwich, Lambeth, Tower Hamlets, Southwark, Hammersmith.
📍 Areas Covered in London
We help homeowners and tenants across London access free cavity wall insulation grants
We support local homes in your local area including Camden, Hackney, Islington, Greenwich, Lambeth, Tower Hamlets, Southwark, Hammersmith and nearby rural communities.
✅ How It Works - 3 Simple Steps
No more days and nights spent battling the cold. Keep your home nice and cosy whilst reducing your energy usage and bills.
Fill out the form in 60 Seconds
We’ll arrange a free energy assessment
Carried out by trusted, accredited professionals
London Frequently Asked Questions
Are cavity wall insulation grants still available in London?
Yes – through the ECO4 and LA Flex schemes, qualifying households in London can still access free cavity wall insulation in 2025.
Do I have to pay anything upfront?
No. If you qualify for the grant, the entire process – from survey to installation – is 100% free of charge.
Can private tenants in London apply?
Yes. Tenants can apply with their landlord’s permission. Landlords can also apply on behalf of tenants who meet the criteria.
How long does the process take?
Most grants in London are confirmed within a few days. Installations typically take place within 2–3 weeks after survey approval.
What if my home had insulation removed before?
You may still be eligible for a replacement insulation grant if the previous install was defective. Let us know during your application.
Who we are and how can we help?
The team at UKEM is certified and qualified to handle all your heating and energy upgrades, including electric and gas boilers
UK Energy Management (NE) Ltd is a national organisation working primarily within the ECO industry, where we strive to deliver funded home energy upgrades for eligible customers nationwide.
UK Energy Management provides opportunities both locally and nationwide, where we provide widespread employment and job security in addition to energy upgrades. As we continue to deliver on our targets set by funding partners, we also prioritise the positive impact that our work can create across the country.
- Gas Safe accredited
- Green Deal Approved
- Cavity Insulation Guarantee Agency Members
*Cavity wall insulation including that installed in party walls, floor insulation, loft insulation (roll insulation & blown insulation), room in roof insulation, condensing boilers, natural gas fired and liquefied petroleum gas fired, heating controls, electric storage heaters.
We propose 100% FREE energy efficiency savings for your home!
Our energy efficiency savings are designed to help you improve your home’s efficiency for free! You simply need to fill out one of our forms to find out if you’re eligible for heating funding. With UK Energy Management:
It’s free to check your eligibility
1-minute form
No obligation/No catch
Free Insulation / Free Heating Upgrades / Free Smart Controls
It’s easy and super-fast to apply (no lengthy forms or endless questionnaires)
We do all the hard work for you! From applying to installing, we take care of the process
We’ve got professional accreditations
⏱ Don’t Miss Out – Limited Funding Available
These grants are in high demand across London. Funding is limited and processed on a first-come, first-served basis.