Sidney "Sid" Jenkins is a fictional character in the television series Skins portrayed by Mike Bailey.

In the first series, Sid is portrayed as a nice guy stereotype, an unlucky virgin who is nervous around girls, and has low self-esteem.

However, by the second series, Sid is more dependable and following Tony's accident, becomes more confident in his own skin, leading him to have sexual relationships with both Cassie Ainsworth and Michelle Richardson, as well as standing up for himself more often.

Sid is initially portrayed as a virgin who has a crush on his best friend Tony Stonem's girlfriend, Michelle Richardson, although he later realises that his true feelings are for Cassie Ainsworth.

Manipulated by Tony, he is frequently unlucky: losing an expensive amount of cannabis, getting beaten up by Jal Fazer's brothers, and getting urinated on by a dog and a homeless person.

He is extremely loyal towards his friends, including Tony and Anwar Kharral, who frequently abuse his loyalty and cause him a great deal of difficulty.

[1] In an interview with Sky, Mike says: It's definitely made my life a bit different; you know walking down the street is kind of a different thing nowadays.

Sid spends the beginning of the first series finale wondering about Cassie and attempts to write a letter explaining how much he loves her.

Sid hurriedly dresses in mismatching clothes and rushes to Cassie's rehab clinic, just after she leaves in a taxi.

At the end of the episode, it is revealed after Sid left Anwar's party he was meeting with Cassie, who is sitting on a bench overlooking Bristol.

In the second series, Sid's relationship with Cassie deteriorates and he begins to distance himself from Tony, who has awakened from his coma and is slowly recovering from the brain damage inflicted by his accident.

In "Sid", he misinterprets Cassie's closeness with her gay Scottish friend and angrily accuses her of cheating on him, later destroying the laptop he used to communicate with her.

In the same episode, a family visit proves too much for Mark to take and he dies, his body discovered by Sid the next morning.

In "Chris", Cassie angrily confronts Sid and Michelle in front of their friends after running into the couple at a club.

Sid attempts to explain things, but Cassie slaps him, telling him that he can't do whatever he wants even though his father is dead.

When he finishes, after describing his emotion as "Hopeless" in her CW, sees pictures of Cassie kissing another boy, which Effy had taken and attached to him.

In the first episode of series 3, JJ, Freddie and Cook opened Sid's locker, discovering his beanie, the "Asian Fanny Fun" magazine as well as his name written inside.

Whether Sid found her in New York or not is not directly confirmed, but Cassie states in a conversation with her roommate that before moving to London she was traveling around America with a boy, but decided to end the relationship because it couldn't go any further.

Cassie does not give the boy's name, but Skins co-creator Bryan Elsley, who wrote the episode, confirmed that this was intended as a reference to Sid.