Mr Biggins (John Sharp) is a notorious payment-dodger who regularly attempts to procure free service out of the practice, as well as decrying the cost of the vets' visits.
"[1] Bill Hartley (Peter Martin, who also plays Arthur Handshaw in series 1 and 2), meanwhile, is a relatively good-natured client, compared to the perpetually disgruntled Ted Grimsdale (Bryan Pringle).
Fellow vet Granville Bennett (James Grout), a cat and dog specialist, is often on hand to help out with the more severe small animal cases.
His enjoyment of alcohol is always of a concern for James, however, who regularly ends up inebriated and making a fool of himself in front of Bennett's wife, Zoe (Pamela Salem), whom he always thought considered him a dipsomaniac.
Geoffrey Bayldon played three characters: Roland Partridge in "Pride of Possession", Mr Mason in the 1983 Christmas Special and confectioner Geoff Hatfield in "Where Sheep May Safely Graze".
Anna Turner also played three characters: Miss Thompson in "Big Steps and Little 'Uns", a stall holder in the 1983 Christmas Special and Mrs Pettinger in "A Cat in Hull's Chance".
Jack Watson played two cantankerous characters: farmer Isaac Cranford in "Nothing Like Experience" and vet Hilary Mottram in "One of Nature's Little Miracles".