The Parkwalk-managed University of Cambridge Enterprise Fund III invested in Reduse in June 2015. In October 2016 the company entered voluntary liquidation.

Reduse, a spin out from the Low Carbon Materials Processing Group at the University of Cambridge, were seeking to change the way laser printed office paper is treated post use. Instead of disposal, recycling and shredding a substantial percentage of laser printed sheets could be, using the ‘unprinter’ technology, be cleaned of all toner without damaging the paper.