Viewers of BBC Call the Midwife are being told to expect to be 'in tears' with the series emotional finale.

Call the Midwife began airing in 2012 and was originally based on Jennifer Worth's books and her work as a midwife in the East End of London in the 1950s.

Now, airing its 14th series and in the 1970s, the midwives of Nonnatus House are still busy helping expecting mothers and caring for the community.

Six episodes of the 14th series have aired so far, and fans are anticipating the final in just a few short weeks.

But, ahead of the final, one Call the Midwife star has teased what fans can expect, warning of an emotional final.

Call the Midwife star teases 'unexpected' final

Annabelle Apsion who has played Violet Buckle since 2015 spoke to the Express at the TV Choice Awards hinting at what fans can expect from the Call the Midwife final.

Sharing: "It is a really uplifting finale.

"It's not anything I would've thought of.

"It's a lovely surprise and it weaves the continuity between the beginning of the series and the end, so it is a lovely finale"

Annabelle also said that viewers can expect to be in "Happy and sad tears."

The final of Call the Midwife won't air until Sunday, March 2 with the seventh episode airing this Sunday, February 23.

Call the Midwife is currently airing it's 14th series.Call the Midwife is currently airing it's 14th series. (Image: BBC / Neal Street Productions / Olly Courtney)

According to Radio Times, the plot of the seventh episode is as follows: "Joyce receives confirmation of a disciplinary hearing following Bernie Midgely's complaint, and despite Sister Julienne's support she fears she could lose her job, home and everything she has worked so hard for.

"The midwives help a family with a history of drug addiction, Dr Turner and Shelagh take the final steps in May's adoption and Trixie is desperate for a ticket to the royal premiere of the local movie Bronco Bullfrog."

Will Olly Rix return to Call the Midwife?

Helen George who plays Nurse Trixie on the BBC drama recently discussed whether Olly Rix would return to the show.

Rix played Matthew and left to move to New York at the end of series 13 in a bid to look for new business ventures. 

Currently, Trixie is splitting her time between London and New York but actress George hinted at Rix's return.

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Speaking to Radio Times, George said: "Who knows!" 

Adding: "It'll be interesting to see what happens there.

"At the moment, I don't know, and I'm excited to find out what happens."

Call the Midwife airs on BBC One and BBC iPlayer.