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This article is about the episode. You may be looking for the 2014, the 2016 magazine story or the DVD.

“Bill, why don't you try and pull Ben back to safety?"
"I tried that, Percy, but Ben is too heavy."
"I'm not heavy!"
"Yes, you are! You weigh tonnes!”
―Percy, Bill and Ben

Percy's Lucky Day is the fourteenth episode of the seventeenth series.


One morning, Percy is dropping off mail at Wellsworth. As the mail is unloaded, Percy is daydreaming and mistakes a man's green handkerchief for the guard's flag. Before the men unload all of the mail, Percy pulls away causing a sack of mail to burst open. While Percy waits for the letters to be picked up, Thomas passes by and comments about Percy having bad luck. Bill and Ben also pass and they disagree with Thomas; they think the accident was caused by sheer carelessness, neither of them noticing when a pumpkin falls off their own flatbed and smashes on the tracks.

Soon, Percy is hurrying along to try and make up for lost time. Suddenly, he spots some pumpkins on the line which have fallen off Bill and Ben's train. Percy brakes, but cannot help ploughing into the pumpkins. Some crates fall off his train and some of the pumpkin guts get stuck to his wheels. He has no choice but to wait until the mess is cleared up. Presently, Hiro pulls up and Percy tells him about how bad his day has started. Hiro tells Percy that he is just having an unlucky day. As Hiro clatters away, Percy recalls what Thomas had said earlier about bad luck and wonders if he is an unlucky engine.

Meanwhile, at Maron station, the Fat Controller is talking sternly to Bill and Ben. To make sure that the rest of their load stays intact, the Fat Controller orders that one engine go in front and the other push from behind. Bill and Ben argue about who should go where and eventually Bill goes to the back of the train after both are given a stern look from the Fat Controller.

At Ulfstead Castle, Percy is delivering the mail. He tells Stephen about his spell of bad luck and Stephen gives Percy his old lucky charm - a horseshoe. Stephen's driver hangs the horseshoe around Percy's brakepipe. Percy is very grateful and sets off, but his wheels are still sticky and he jerks as he pulls away. Unbeknownst to Percy, the horseshoe falls off.

The next day, Percy is on time and does not have any accidents. His day is so lucky that the Fat Controller gives him an important delivery; he must take the Duchess of Boxford a present. As Percy does so, he believes his lucky charm is working unaware that he does not have it.

Later that day, things are still going well for Percy until he meets up with Bill and Ben. The twin at the front of the train, Ben, has derailed near an embankment and they are arguing about whose fault it is. Still feeling very lucky, Percy offers to pull Ben back onto the track. Percy tells the twins about his lucky horseshoe, but Bill is puzzled as he cannot see it. Realising it is not there, Percy begins to doubt that he can help the twins without luck on his side. Bill decides to have a go at pulling Ben back onto the track by himself, but only endangers Ben further. Percy can see the desperate situation Ben is in and knows that he must help with or without his lucky charm. Percy couples up the twins and starts to pull. The Fat Controller arrives just in time to see Percy pull Ben back onto the rails. The Fat Controller praises Percy, who rushes off to try and locate his missing lucky charm, leaving the twins arguing about who was to blame for the accident, much to Sir Topham's exhaustion.

Percy hurries back to Ulfstead Castle to tell Stephen that he has lost the lucky horseshoe. Stephen tells Percy that he never had the lucky horseshoe in the first place as it fell off as soon as he pulled away. Percy realises that the good luck he had was nothing to do with the horseshoe and he states that he does not believe in lucky charms anymore. Stephen reveals that he does not really believe in them either and had only given Percy the horseshoe to cheer him up.





US and CAN

  • Martin Sherman as Thomas and Percy
  • Jonathan Broadbent as Bill and Ben
  • Teresa Gallagher as the Duchess of Boxford
  • Bob Golding as Stephen
  • William Hope as the Wellsworth Station worker
  • Togo Igawa as Hiro
  • Kerry Shale as Sir Topham Hatt


  • Going by production order, this is the twenty-second episode of the seventeenth series.
  • This episode marks first of a several things for Bill and Ben:
  • Jonathan Broadbent joins the voice cast.
  • In the opening shot, a four-leaf clover which represents good luck is present in the bottom right-hand corner of the frame.
  • This is the second time a green object was mistaken for a green flag, the first was in the second series episode, Wrong Road.
  • When first hung, the horseshoe is upside down, which is a symbol of bad luck.
  • From this episode onwards, Rosie gains a funnel-mounted lamp of Ferdinand's design.
  • The story's plot is almost similar to the episode, Henry's Lucky Day as well as the title.
  • In the Estonian, Latvian, Lithuanian, Baltic Russian and one of the Vietnamese dubs, the UK dub can be heard in the background as a dubbing track was not used.


  • The narrator says that Percy couples up to Ben, but he actually couples up to Bill.
  • When Henry arrives at Wellsworth, he has three coaches, but when he leaves, he has two.
  • In the first two shots at Wellsworth, there is a buffer floating above the middle track.
  • The sign at the Summer House is blank.
  • When Hiro leaves after saying "You're just having an unlucky day," his cab is not rendered properly and he appears to have no interior nor crew.


In Other Languages

View content
Language Title
Brazilian Portuguese O Dia de Sorte do Percy
Chinese Mandarin 培西的幸运日
Croatian Percyev sretan dan
Czech Percyho šťastný den
Dutch Een Geluksdag voor Percy
Estonian Percy õnnepäev
French La chance tourne
Galician O Día de Sorte de Percy
German Percys Glückstag
Greek Η τυχερή μέρα του Πέρσι
Hebrew יום המזל של פרסי
Hungarian Percy szerencsés Napja
Italian Il portafortuna
Japanese パーシーのおまもり
Korean 퍼시의 행운
Latin American Spanish El Día de la Suerte de Percy
Norwegian Percys lykkedag
Polish Szczęśliwy dzień Piotrka
Romanian Ziua Norocoasă a lui Percy
Russian Удачный день Перси
Serbian Persijov srećan dan
Spanish Un Día de Suerte para Percy
Ukrainian Щасливий День Персі

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