Series 4 featured Bodger and Badger working at Chessington World of Adventures, a theme park in Surrey. Bodger was the caretaker there, and Badger made friends with a girl called Holly who frequently visited the theme park. Owing to her mother being a staff member there, Holly was free to visit whenever she liked. Bodger's boss was Mr Beasley, who was nasty and obsessed with rules. Beasley kept trying to catch Badger to try to get Bodger chucked out.

Series 4's episodes were cut down to 10 minutes, instead of 15. This is the least-remembered series of all. It is also the hardest to obtain copies of, there are no known copies uploaded to the internet at the time of typing this article. This series was repeated on Mondays and Tuesdays, with an occasional gap of one week, from March to June 1996, commencing the week following the end of the original transmission of series 6. The opening titles to this series and the remaining series were edited short, so that by this point, the full verse of the theme song is not heard in both opening and closing titles (instead concentrating on one verse each). The opening titles now only contain clips from episodes in the series, with no material specially shot for the opening titles. The practice of having clips from earlier in the episode of actors appearing in character over their credits in the closing credits sequence was gone, with random clips from the episode appearing in chronological order throughout the closing credits sequence. This would remain the normal fashion of episode credits for the series until the end (with a surrounding graphics change for series 9).

Bodger starts a new job as handyman at the Chessington World of Adventures theme park, where no pets are allowed. But Badger is determined to join Bodger, and together the pair meet Holly who hangs about a lot in the park - for free - because her mum works in the kitchens. All seems well until Badger realises that he has not seen any mashed potato in the park.

Mr Beasley tries to catch Badger, who is still at the theme park, but is confused as Bodger, Holly and Badger have great fun tricking him.

Badger makes friends with some unusual animals, the tapirs.

Bodger fixes the elephant's trunk and Badger tries to hit Mr Beasley with mashed potato.

From this episode onwards this series moved to 4:00pm.

Bodger dresses up as a knight, while Badger tries his paw at flying and Holly rescues him.

Mr Beasley is issued with a new uniform, but Bodger manages to ruin most of it with the help of Badger and some mashed potato.

Holly wins a watch at Bodger and Badger's unconventional ball tossing stall, but Mr Beasley takes it from her. Badger thinks of a novel way of getting it back.

Mr Beasley sits on a painted bench and tries to reprimand Bodger for not following orders. Instead, Head Office allow Bodger to run the ice-cream cart.

Mr Beasley has finally mastered a plan to catch Badger using a catapult.