It is currently unconfirmed how many new episodes of the BBC One family comedy drama are being made.
However, pre-production is now underway for a ten-week shoot in Hertfordshire and Bedfordshire from June, whilst folk band The Unthanks, who provide the score for the hit series, based on the popular children's stories by Barbara Euphan Todd, have tweeted that there will be three new episodes airing at Christmas.
Speaking before the third episode, Saucy Nancy, aired on Christmas Eve 2020, writer, director and star Crook revealed that plans to record a fourth programme last year were scrapped because of coronavirus.
"The plan was originally to make two this year but we just didn't have the time," he told The Sun of the series, which is made by Leopard Pictures and Treasure Trove Productions. "We were about to start pre-production when it closed down.
"During the first lockdown I was able to keep writing and keep preparing, so when we were finally able to make an episode we were ready to go."
Guest stars have included Michael Palin as The Green Man, Vicki Pepperdine as Aunt Sally, Zoë Wanamaker, Lucy Montgomery, Shirley Henderson, Spencer Jones, Youssef Kerkour, Tom Meeten and Brian Blessed.
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