The couple vowed that they wouldn't have anymore children after the birth of their 18th child, Hallie Alphia Beau 13 months ago, but in January they confirmed that another was on the way.
Following the birth, Sue, 41, told The Sun:
"Our friends and family keep saying I should have one to get an even number – so round it off to an even 20.Noel, 46, and Sue say the original plan was to have three children, but they loved the experience so much that they simply kept going.
"I can’t rule it out. At the moment I am happy to have Phoebe with us, she is healthy and a little stunner." The couple, who run a successful bakery in Morecambe, raise their huge family without claiming any extra state benefits.