Norwich Castle's major revamp being documented by Eye Film

Eye Film was set up in 1973 and has called Norwich its home for the last 23 years - located in St Georges Street.

The firm has created multiple series for outlets including the BBC, ITV and Channel Four, with well-known documentaries under its belt such as The Trials of Amanda Knox.

Eye Film has worked on documentaries such as the Trials of Amanda Knox (Image: Eye Film)

The company, founded by Frank Prendergast and Mike Coles, has also worked with stars such as Prince Harry, Angelina Jolie and David Attenborough.

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The company's biggest Norfolk-focused production is just around the corner, as a documentary built on exclusive access to the ongoing refurbishment of Norwich Castle.

The company has created series and documentaries for the BBC, ITV, Channel 4 and Channel 5 (Image: Eye Film)

Roughly 120 people attended an Eye Film party at Cinema City on December 18 as they celebrated 50 years in the industry to the day.

Michelle McCabe, business development manager of Eye Film, said the celebrations were a "huge success".

She said: "It was a fantastic night. There was a great turnout of people, including former employees and Mei and Koda - who we recently filmed for the My Life Saving Dog documentary - came along as well.

"There was prosecco flowing all night, a buffet, so everyone was dancing late into the night.

Eye Film was founded on December 18, 1973, by Frank Prendergast and Mike Coles (Image: Eye Film)

"Sue Prendergast, Frank's wife, came in and said a few words in his honour too - it was a wonderful party."

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In the making for eight years, Eye Film's Norwich Castle documentary will focus on the reopening of the city landmark next year.

Eye Film's upcoming documentary will cover the re-opening of Norwich Castle next year (Image: Norfolk Museums Service)

This included items discovered aboard the sunken HMS Gloucester being made public for the first time at the castle in February - more than 340 years after the ship went down.

Charlie Gauvin, managing director of Eye Film, added: "We're immensely proud of our legacy and celebrating this milestone.

"We look forward to continuing our mission of bringing compelling stories to audiences around the world."

- Additional reporting by Francis Redwood

The company celebrated 50 years in business at Cinema City on December 18 (Image: Eye Film)