If the wood you are looking for does not appear on the interactive map or through the wood search, then it may not be on the inventory. This does not necessarily mean it is not long-established or ancient.
When the inventory was produced, the woods initially selected as being long-established or ancient were those which appeared on all the following maps:
Some areas may have had woodland cover since at least 1830, but may not have appeared on all the maps for various reasons, for example:
If the wood you are interested in does not appear on the inventory, but you think perhaps it should, then you can carry out your own research, and then let us know if you think it should be added.