Best Greenhouse UK (2026)
Published 2026-03-05 · Updated 2026-07-24
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-07-24.
Our pick: the Halls Forest Green Supreme 8ft x 6ft Greenhouse, Toughened Glass — the best Greenhouses & Cold Frames we tested, from £899.00.
From compact cold frames for patios to full-size glass greenhouses for allotments, we compared build materials, light transmission and ease of assembly to find the best greenhouses you can buy in the UK right now.
See the full range in Greenhouses & Cold Frames.
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#1 Pick
Halls Forest Green Supreme 8ft x 6ft Greenhouse, Toughened Glass£899.00
Pros
- Toughened safety glass throughout
- Smooth-action sliding door and air vent for airflow
- Curved eaves add extra headroom
Cons
- Higher price
- Requires a solid, level base
#2 Pick
Palram Canopia Harmony 6x8 Silver Greenhouse, Polycarbonate£349.99
Pros
- Shatterproof polycarbonate panels with over 90% light transmission
- Rust-resistant aluminium frame with galvanised steel base
- Sliding door and roof vent for airflow
Cons
- Assembly takes a full weekend for two people
#3 Pick
Selections Wooden Framed Polycarbonate Cold Frame Growhouse£79.99
Pros
- Wooden frame with polycarbonate glazing
- Great for hardening off seedlings
- Compact footprint for patios
Cons
- Not tall enough for mature plants
FAQ
Glass or polycarbonate greenhouse — which is better for the UK climate?+
Glass gives the best light transmission for year-round growing but costs more and can shatter in hail or strong winds. Polycarbonate is nearly as effective, far more impact-resistant, and better insulated against UK frosts.
Do I need planning permission for a garden greenhouse in the UK?+
Most domestic greenhouses fall under permitted development rights if they stay within height and coverage limits, but always check with your local council if you live in a conservation area or have an unusually large plot.
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