- You may be looking for the New Earth location.
The New Forest was a region of England.
After a global forest grew overnight, the Twelfth Doctor claimed that he found Maebh Arden "wandering around the Brand New Forest", which he went on to say was "like the New Forest, except even newer". (TV: In the Forest of the Night [+]Frank Cottrell-Boyce, Doctor Who series 8 (BBC One, 2014).)