While she was a visiting artist at Woodlane High School in 2005, Cally Trench worked on Territory, a large (7 x 5 feet) painting in acrylic on canvas that shows her bedroom as a teenager, but seen from above. She worked primarily from memory, aided by imagination, and from the few objects from her teenage years (mostly books and records) that she still possessed.

The project at Woodlane High School was a Creativity Action Research Award (CARA) project, funded by Creative Partnerships, which took place in 2005. The partners in the project were teacher Caroline Day-Lewis and artists Cally Trench and Alex Dewart. Woodlane High School is a special school in West London. The project involved a class of Year 10 pupils (aged 14-15), who were making work towards their GCSE in Art. Both the children and the artists travelled on similar creative journeys - making work on the theme of memory, and the end result was paintings in acrylic on canvas.

Territory was exhibited in the 2005 Artsway Open and in At Play 1 at South Hill Park in 2009. It is now in a private collection.