Al Murray's Multiple Personality Disorder

John Barrowman becomes the third and final actor from Doctor Who to make an appearance on this series, playing in this instance a thinly veiled parody of his character 'Captain Jack' from Doctor Who and Torchwood. He is also another former guest from Al Murray's other ITV1 show Al Murray's Happy Hour to make an appearance.

Michael Winner follows Duncan Bannatyne and Peter Davison as another former guest on Al Murray's Happy Hour to make a cameo on this series.

Sylvester McCoy becomes the second actor from Doctor Who to appear on the series and the second former 'Doctor' (after Peter Davison) to appear as a Nazi doctor in this series.

Peter Davison becomes the first actor from Doctor Who to appear in the series and the first former 'Doctor' to appear as a Nazi doctor on the show. He is also in a long line of guests who previously appeared on Al Murray's other ITV1 series, Al Murray's Happy Hour.