Breaking Bad fans have been given a sneak glimpse at the eagerly anticipated spinoff Better Call Saul.

The much-anticipated show is set six years before Saul Goodman became Walter White's adviser and will chart his transformation from struggling lawyer to a close confidant to the chemistry teacher turned drug dealer.

The nine-second teaser shows Bob Odenkirk's character telling a client: "Lawyers. We're like health insurance. You hope you never need it but, man oh man not having it? No!"

The trailer was shown during AMC's Breaking Bad "Binge Marathon" in the US over the weekend.

The 10-episode series will debut in February 2015 and UK viewers will be able to watch the show on Netflix.

Better Call Saul has been commissioned for two seasons by AMC. Credit: AMC

Excitement for the prequel increased last month when a billboard appeared in Albuquerque, advertising the services of the name of Goodman's alter-ego.

The number for "the lawyer you can trust", James M McGill, was directed to a voicemail message voiced by Odenkirk.

This billboard appeared in Albuquerque last month. Credit: Instagram/i_am_billytapia

Bryan Cranston, who played Walter White, previously suggested his character Walter White may not be dead, telling CNN "never say never" to a return.

But he has since appeared to rule out appearing in Better Call Saul, although he is planning on directing an episode.

"I don’t know in what context it would work in, because we’re in different phases," the actor told The Daily Beast.

"The characters didn’t meet until the second season of Breaking Bad, when Walter needed to meet him.

"I suppose they could have a serendipitous brush of each other down the street or in the market, but I don’t know what good that’ll do—it’s just a little cookie."

Michael McKean stars as Goodman's brother in Better Call Saul. Credit: AMC
The series is set to debut in February 2015. Credit: AMC

Jesse Pinkman is also unlikely to appear after Aaron Paul revealed he has not been offered a role, despite his desire for a part.

"I’d love to be a part of it. I’m not sure if that’s in the cards. I’m so jealous that everyone is back in Albuquerque, back in the same stages where we shot Breaking Bad," Paul told AMC.

Aaron Paul and Bryan Cranston starred in the original Breaking Bad series. Credit: AMC

Despite the absence of Walter White and Jesse Pinkman, fans will be pleased to learn that popular "fixer" Mike Erhmantraut will feature in the series.

Breaking Bad was among the most-watched shows on television in history before its conclusion last year, receiving multiple accolades including Primetime Emmy and Golden Globe awards.