By Arcturus Publishing
By Unknown
By Bailie, J.M.
By Taggart, Caroline
By Carlton Books
By Nicklin, Frank, Coupe, Peter
By Rawle, Graham
By National Geographic Kids Magazine, National Geographic Kids
By Fox, Hayden
By Daily Mail
By Gilbert, Val
By Henry W. Hill, Rowland G.P. Hill
By Beaumont, J.Graham
By Telegraph Group Limited
By Fid Backhouse & Richard Widdows
By John Halpern
By Tarbuck, Liza
By Standage, Tom
By Ayto, John
By The Times Mind Games
By The Times Mind Games, .
By Lange, Catherine De
By The UK Mathematics Trust
By Adrian Fisher
By Ash, Russell
By HIGGLETON Elaine, McGOVERN Una & SCHWARZ Catherine
By Moore, Dr Gareth, Turing, Sir John Dermot
By Winn, Christopher