|Postman Pat's Pied Piper|
|Air Date||13th March 2005|
|Previous||Postman Pat's Wild West Rescue|
|Next||Postman Pat and the Tricky Transport Day|
A group of lost field mice are causing lots of trouble in the Greendale, eating away at Pat's letters, Sara's muffins, Ajay's whistle rope and Nikhil's blanket. Luckily with the help of Pat's penny whistle and Julian and Meera's recorders, the mice are able to be led home safely.
- Sara Clifton
- Julian Clifton
- Mrs. Goggins
- Ted Glen
- Bill Thompson
- The Reverend Timms
- Katy and Tom Pottage
- Ajay Bains
- Nisha Bains
- Meera Bains
- Nikhil Bains
- P.C. Selby
- Lucy Selby
- Sarah Gilbertson
- Mr. Pringle
- Charlie Pringle
- PAT 1
- Ted's Lorry
- The Panda Car
- The Greendale Rocket
- Pat's House
- Post Office
- Ted's Workshop
- Ted's Mill
- Greendale Station
- Greendale School
- The Church
- Ken Barrie as Pat, Ted, the Reverend Timms, P.C. Selby and Mr. Pringle
- Melissa Sinden as Jess and Bonnie
- Carole Boyd as Sara Clifton, Mrs. Goggins, Sarah Gilbertson and Charlie
- Janet James as Julian and Lucy
- Kulvinder Ghir as Bill, Tom and Ajay
- Archie Panjabi as Katie, Nisha and Meera
- Going by production order, this is the twenty-third episode of the fourth season.
- The water coming out of Nisha's watering can is really cling film.
- This is the first of two episodes to feature the song "Follow the Music", the second being "Postman Pat's Noisy Day".
- In the opening shot, PAT 1 is missing its rear number plate.
- The Greendale Rocket's whistle should have had a chain, not a rope.
- The mice would not have possibly been able to eat the whistle rope as it would be too high for them to get to.
- Sara should know that cats do not eat muffins.
- Pat uses his hat to catch the mice and they dodge it. After this, Pat's hat suddenly appears back on his head before Julian brings it back to him.