BRIDGWATER was transformed into 1960s London today for the filming of Black Cake, an upcoming eight-part drama series set to air on a US streaming service.

Actors in vintage clothing were spotted walking around the King Square area today, while there were plenty of classic vehicles on display. 

All of this was behind a backdrop of television cameras and rigs operated by dozens of production crew members.

King Square and Sedgemoor District Council's office building were used by production company CBS VIACOM, which is filming Black Cake in partnership with Hulu.

Hulu is an American streaming service with over 46 million subscribers. Its original series include The Handmaid's TaleHow I Met Your Father, and Castle Rock.

Black Cake is based on Charmaine Wilkerson's debut novel of the same name.

After its release, the novel became a New York Times bestseller and appeared on former President Barack Obama's summer reading list.

Bridgwater Mercury: Film crews in King Square for the filming of upcoming Hulu series Black Cake. Picture: Steve RichardsonFilm crews in King Square for the filming of upcoming Hulu series Black Cake. Picture: Steve Richardson (Image: Steve Richardson)

The book was published in February and has been described as “the extraordinary story of how the inheritance of secrets, betrayal and memories can shape a family for generations”.

The storyline takes place across several locations including Rome, Italy, England, Scotland, and southern California.

According to online reports, the series is being executive produced by Oprah Winfrey's Harpo Films, with involvement from Handmaid's Tale writer Marissa Jo Cerar.

Bridgwater Mercury: Part of the town was transformed into 1960s London for the day. Picture: Steve RichardsonPart of the town was transformed into 1960s London for the day. Picture: Steve Richardson (Image: Steve Richardson)

Councillor Bill Revans, leader of Somerset County Council, was among those to take pictures of the film set this morning. 

He tweeted pictures of an on-set London bus stop with the caption: “Delighted to see we now have a London bus service from Castle Street in Bridgwater…”.

King Square and Chandos Street were closed today between 7am and 9pm on Friday, September 23 while filming took place.

A sign on the corner of King Square said: “Filming in progress. Please check with operative if access is required. Cyclists dismount. Thank you for your patience.”

Black Cake synopsis: What can viewers expect from Hulu drama?

After the death of Eleanor Bennett in present-day California, her children, Byron and Betty, are left with a puzzling inheritance: a Caribbean black cake and a voice recording.

Eleanor's recording tells the story of a young swimmer who escapes her island home under suspicion of murder. 

A heartbreaking story unfolds that challenges everything Byron and Betty thought they knew about their family - and themselves.