Yes, Sir. Sorry, Sir!

Director

• 
  Wong Si Yuhn

Music Editor

• 
  Eva Chan

Producer

• 
  Lau Ka Ho

Main Role

• 
  Moses Chan

  Law Yiu Wah

  Main Role
• 
  Linda Chung

  Koo Ka Lam / "Carman"

  Main Role
• 
  Tavia Yeung

  Ho Miu Suet

  Main Role
• 
  Ron Ng

  Ching Man Lik / "Nick"

  Main Role

Support Role

• 
  Ram Chiang

  Poon Kwok Shing

  Support Role
• 
  Law Lok Lam

  Chiang Hung

  Support Role
• 
  Joseph Lee

  Ko Sun [Principal]

  Support Role
• 
  Savio Tsang

  Ngai Fung / "Charles"

  Support Role
• 
  Queenie Chu

  Koo Ka Sin / "Ceci" [Ka Lam's sister]

  Support Role
• 
  Ronald Law

  Cheung Pak Chuen [Member of "Killer-4"]

  Support Role
• 
  Brian Chu

  Mok Chak Kei [Member of "Killer-4"]

  Support Role
• 
  Cilla Kung

  Chung Ka Bo [Member of "Killer-4"]

  Support Role
• 
  Calvin Chan

  Chiang Chun

  Support Role
• 
  Yeung Chiu Hoi

  Ng Ga Yi

  Support Role
• 
  Tony Kwong

  Lo Ping Chan

  Support Role
• 
  Mandy Lam

  Chan Mei Mei / Miss Chan Chan

  Support Role
• 
  Candy Chu

  Lee Heung Sin / Miss Lee

  Support Role
• 
  Max Cheung

  Lok Cheuk Man

  Support Role
• 
  Stephen Wong

  Kong Tung Leung / Kong Sir

  Support Role
• 
  Rachel Kan

  Miss Yu [Bowling coach]

  Support Role
• 
  Yu Chi Ming

  Lo Sir [Chinese Language teacher]

  Support Role
• 
  Leo Lee

  Chu Tin Yan [Bullied student]

  Support Role
• 
  Chow Chung

  Law Chun Pong [Yiu Wah's grandfather]

  Support Role
• 
  Rainbow Ching

  Cheung Yuen Ngor [Yiu Wah's mother]

  Support Role
• 
  Peter Lai

  Law Tai Kwai [Yiu Wah's uncle]

  Support Role
• 
  Lily Li

  Choi Kiu [Yiu Wah's aunt]

  Support Role
• 
  Alice Fung

  Fong Choi Fun [Miu Suet's mother]

  Support Role
• 
  Jonathan Cheung

  Ho Yat Sing

  Support Role
• 
  Doris Chow

  Yeung Tsz Ching [Yat Sing's wife]

  Support Role
• 
  Angelina Lo

  Tung Sau Lan [Ka Lum's mother]

  Support Role
• 
  Fanny Ip

  Wong Tsz Tong

  Support Role
• 
  Casper Chan

  Yuen Sau Wai / "Wendy"

  Support Role
• 
  Jack Wu

  Yam Tak Kwong

  Support Role
• 
  Eric Li

  Shing Sai Long [Triad member]

  Support Role
• 
  Bond Chan

  Ho Chit Shun / "Terrence" [Triad member]

  Support Role
• 
  Daniel Kwok

  "Glasses Fu" [Triad member]

  Support Role
• 
  Sunny Dia

  "Biscuit" [Triad member]

  Support Role
• 
  Jess Sum

  Yuen Wing Yan / "Michelle"

  Support Role
• 
  Angel Chiang

  Lam Lei Heung / "Yumi"

  Support Role
• 
  Jason Pai

  Hoh Nin Fat / A Bare

  Support Role
• 
  Janice Ting

  [Student]

  Support Role
• 
  Chiu Shek Man Support Role
• 
  David Do Support Role
• 
  Joe Junior Support Role
• 
  Tina Shek Support Role
• 
  Cheng Shu Fung Support Role
• 
  Man Yeung Support Role
• 
  Dickson Wong Support Role
• 
  Nathan Ngai Support Role
• 
  Ho Chun Hin Support Role
• 
  Tony Yee Support Role
• 
  Calinda Chan Support Role
• 
  Iva Law Support Role
• 
  Jones Lee Support Role
• 
  Jacky Lee Support Role
• 
  Joey Law Support Role
• 
  Samson Yeung Support Role
• 
  Kelvin Leung Support Role
• 
  Milkson Fong

  Billy

  Support Role
• 
  Max Choi Support Role
• 
  Martin Tong Support Role
• 
  James Wong Support Role
• 
  Stanley Cheung

  [Student]

  Support Role
• 
  Cecilia Fong Support Role
• 
  Eddie Ho Support Role
• 
  Ricky Lee Support Role
• 
  Siu Lai Man Support Role
• 
  Jim Tang Support Role
• 
  Cheng Ka Sang Support Role
• 
  Oscar Chan Support Role
• 
  Sam Leung Support Role
• 
  Jenny Fan Support Role
• 
  Nicole Wan Support Role
• 
  Ko Chun Man Support Role
• 
  Yeung Shui Lun Support Role
• 
  Miguel Choi Support Role
• 
  William Chu Support Role
• 
  Kau Cheuk Nang Support Role
• 
  Esther Wan Support Role
• 
  Helen Ng Support Role
• 
  GoGo Cheung Support Role
• 
  Chan Min Leung Support Role
• 
  Judy Tsang Support Role
• 
  Mark Ma Support Role
• 
  Gordon Siu Support Role
• 
  Akai Lee Support Role
• 
  Sammy Sum Support Role
• 
  Calvin Lui Support Role

Guest Role

• 
  MC Jin

  MC Jin

  Guest Role
• 
  Jimmy Au

  Brother Fu

  Guest Role
• 
  Henry Yu

  Koo To Yeung

  Guest Role
• 
  Brian Burrell

  [Judge]

  Guest Role
• 
  Ngai Wai Man

  Ryan

  Guest Role
• 
  Janice Shum

  [Wedding Planner]

  Guest Role
• 
  Irene Wong

  [Bowling master]

  Guest Role
• 
  Otto Chan

  Brother Bo

  Guest Role
• 
  Marine Lee

  Cheung Ceoi Ceoi (Ep.6)

  Guest Role
• 
  Frederick Cheng

  Cheung Hau Ming [Student] (Ep. 11)

  Guest Role
• 
  Jack Hui

  CID (Ep. 14)

  Guest Role
• 
  Hugo Wong

  CID (Ep. 16)

  Guest Role
• 
  Luvin Ho

  [Ngai Fung's ex-girlfriend] (Ep.18)

  Guest Role
• 
  Deon Cheung

  Dr. Kwan (Ep. 22)

  Guest Role
• 
  Kenneth Ma

  Jack (Ep. 30)

  Guest Role
• 
  Skye Chan

  Macy (Ep. 30)

  Guest Role
• 
  Li Wai Kin

  Tin

  Guest Role
• 
  Helen Seng Guest Role
• 
  Aurora Li

  [Classmate]

  Guest Role
• 
  Alan Wan

  (Ep. 12)

  Guest Role
• 
  Bobo Hoi Guest Role
• 
  Louis Szeto

  [Police officer]

  Guest Role
• 
  Marcus Kwok

  [Doctor] (Eps. 14, 23, 30)

  Guest Role
• 
  Fanny Lee

  [News reporter]

  Guest Role
• 
  Yao Bing

  [Inland personnel]

  Guest Role
• 
  Coffee Lam Guest Role
• 
  Oscar Li

  [Young police officer applicant]

  Guest Role

Unknown

• 
  Kirby Lam Unknown
• 
  Lee Shing Cheong Unknown
• 
  English Tang Unknown
• 
  Vincent Cheung Unknown
• 
  Kitty Lau Unknown
• 
  Chan On Ying Unknown
• 
  Shally Tsang Unknown
• 
  Leo Tsang Unknown
• 
  Mak Ka Lun Unknown
• 
  Wong Wai Tak Unknown
• 
  Albert Law Unknown
• 
  Forest Chan Unknown
• 
  Lee Hoi Sang Unknown
• 
  Kong Hon Unknown
• 
  Steve Lee Unknown
• 
  Samantha Chuk Unknown
• 
  Russell Cheung Unknown
• 
  Amy Ng Unknown
• 
  Henry Lo Unknown
• 
  Eric Chung Unknown
• 
  Adam Ip Unknown
• 
  Jason Lam Unknown
• 
  Chan Wing Chun Unknown
• 
  Hoffman Cheng Unknown
• 
  Andy Sui Unknown
• 
  Peter Pang Unknown
• 
  Wong Man Piu Unknown
• 
  Jenny Wong

  Candy

  Unknown
• 
  Bert Mok Unknown

Bit part

• 
  Terrence Huang

  [Student]

  Bit part
• 
  Danny Lo Bit part
• 
  Candy Cheung Bit part
• 
  Jonathan Lee Bit part