Garden Nature

https://gardenature.co.uk/shop/wildlife-habitats/garden-bird-boxes?

Garden Bird Boxes and Nesting Boxes

Our garden nest boxes have been carefully manufactured and selected for best quality, durability and lowest maintenance.

We have quite a range of nesting boxes to attract birds and provide a safe breeding environment for them to return to year after year. Some nest boxes are specialised, If you don't see what you want please contact us and we will be pleased to help and advise.

C J Wildlife

https://www.birdfood.co.uk/nest-boxes.html

Our nest boxes come in a variety of sizes and shapes to suit different bird species. Each bird box comes with specific measurements and diameters, so you know which birds can use your nest box. Our bird boxes are made with the best quality materials to ensure they are sturdy and warm for our feathered friends to make their nesting box! 

The Barn Owl Trust

https://www.barnowltrust.org.uk/product-category/nestboxes/?

All our nest boxes are thoughtfully designed to be durable, practical, and safe for the birds, based on more than 25 years of experience and research. Hand-made by us here in Devon, using sustainably produced, long-lasting, FSC certified timber.  
All profits help to support our work: “Conserving the Barn Owl and its Environment”.

RSPB

https://shopping.rspb.org.uk/bird-feeders-boxes-tables/bird-houses-nest-boxes

Passionate about nature, dedicated to saving it. Since we started on our mission in 1889, the threats to nature have continued to grow, but we've grown to meet them too. We’re now the largest nature conservation charity in the country, consistently delivering successful conservation, forging powerful new partnerships with other organisations and inspiring others to stand up and give nature the home it deserves. 

The Nestbox Company

https://www.nestbox.co.uk/

We've been producing nest boxes for wildlife professionals and the public for over 15 years. The Nestbox Company brings together the skills and expertise of our family to produce great quality nest boxes designed specifically for UK wildlife. We started making nest boxes in 1996 based in a shed in Herefordshire. Since then, we’ve grown in size to become one of the largest producers of roost and nest boxes in the UK.