 The Sigma Consultancy was purchased from the Stapenhursts on 30 April 2010, by Peter and Helen Rushmore, leaving the Rushmores the sole owners of the Rushmore Reviews.Participants meet annually in Aberdeen Scotland to discuss and agree any changes to the data being shared and the rules under which it is shared.The 2013 annual meetings, hosted by both Helen and Peter Rushmore, marked 25 years of the Reviews, and 20 years since the outsourcing to Rushmore Reviews.