Percy's Progress (US title: It's Not the Size That Counts) is a 1974 British comedy film directed by Ralph Thomas and starring Leigh Lawson, Elke Sommer, Denholm Elliott, Judy Geeson and Harry H.

Betty Box says in her autobiography that they only agreed with Nat Cohen to make a sequel to Percy (1971) if he financed a film about Byron and Shelley, to be called The Reckless Years.

[8] The Monthly Film Bulletin wrote: It's now three years since Ralph Thomas and Betty Box made their first leeringly coy foray into sex comedy; this sequel to Percy finds them maintaining the same approach, with the same jejune results.

Their chosen tactic is to beat around the bush (a joke which, oddly, no-one uses): the movie's main protagonist is kept securely locked behind trousers or below the frame-line, and words of four letters rarely have more than their first one uttered.

In some ways, Sid Colin and Ian La Frenais seem aware of this, for they keep drifting into other areas for material – showbiz, TV, ethnic characteristics, and spy movies all have their fair share of parody.

Some come out of the charades with a shred more dignity than others: James Booth's shambling, Harlesden-based private eye, Harry H. Corbett's silver-haired, H.P.

Matters aren't improved by the misguided attempt to brighten the movie up with modish fripperies: the soundtrack is chock-a-block with unwanted songs, and the editor treats us to the full range of fancy wipes in the shapes of circles, squares, stars, and even pieces from a jigsaw puzzle.