with Judith Hann , Maggie Philbin , Peter Macann and Howard Stableford.
Including this week a look at past finalists from the Prince of Wales Award for Innovation and Production. Some are now multi-million-pound businesses; but whatever happened to the electrostatic garden sprayer, or the remarkable plane which would fly almost as slowly as a helicopter? Producer MARTIN MORTIMORE
Studio director STUART MCDONALD Editor RICHARD REISZ