From their website:
We’ve just added a new range of Trees to the website. This first batch are all deciduous, varying in height with 35mm, 48mm and 50mm. The styles are slightly different as well. Packaged in bags of 10 at a bargain £2.50, you could have a forest for a tenner. The trees themselves have stiff wire trunks, so you can literally push them into your terrain, or easily mount them on a small piece of putty.
These can be found in the Scenery and Basing section of the website.
We’ll be adding some more to this range very soon, with bigger, wider, and different styles.