The seven were convicted of conspiracy to blackmail at a trial last year. Nicholson, from Eversley in Hampshire, received 11 years, the Averys, also from Eversley, received nine years each, Medd-Hall, from Croydon, received eight years, Wadham, from Bromley, was sentenced to five years, Selby, from Chiswick, received four years, and Amos from Church Crookham, Hampshire, received four years.