By Judith Baxter, Baxter, Judith
By Colin Goldsmith, David Nelson, School Mathematics Project
By Brian Bolt, Bolt, Brian
By Jeffrey Wood, Lynn Wood
By Rob Childs
By Paula Bartley, Cathy Loxton
By Alan Millard
By Mike Savage, Julian Williams
By New Horizons Science
By Helen Cook, Morag Styles, Cook, Helen, Styles, Morag
By Ray Stevens
By STEP 5-16 Design and Technology
By School Mathematics Project
By Susan Golombok, Golombok, Susan
By Alan R. Townsend
By Adrian Holliday, Holliday, Adrian
By Colin Vout, Gordon Gray
By University of Cambridge Local Examinations Syndicate
By Anglesey Language Studies Centre