In 2022, woodland covered 32,400 sq km of the UK; or 13% of the UK's land. Ancient woodland covers only 2.5% of the UK. Sadly, up to 70% of ancient woodlands in the UK have already been lost.
Oak trees may live for 1,000 years, although 600 years is more typical - an oak tree is classed as ancient once it reaches 400 years old. In the UK, 326 species are completely dependent on oak trees, including 257 species of invertebrates.
1,225 of the UK's ancient woods are currently under threat from development, overgrazing, air pollution and the spread of invasive species such as rhododendron. Around half of the UK's remaining ancient woodlands are affected by felling and replanting with non-native conifers.