Sue, who became a parent when she was just a teenager, has revealed she would actually love to extend her brood and adopt.
"We adore being surrounded by kids, so I'd love to adopt or foster. We're not having any more of our own, so it's definitely something we'd think about when ours are older." With her older children starting to move out, Sue admits the family dynamic is changing.
"I dread the thought of an empty nest but know it will happen one day," she says.
Her love story with husband Noel began 35 years ago, when they met as teenagers in Kendal in the Lake District.
They married in 1992, when Sue was 17, and they were already parents to Chris, now 34.
"We're proud to be Britain's biggest family, but we'd only planned on three," admits Sue.
"We're addicted to children, but as addictions go, it's not a bad one because it's motivated by love.
We have plenty to go round." As well as Chris, the couple share Sophie, 30, Chloe, 28, Jack, 26, Daniel, 24, Luke, 23, Millie, 22, Katie, 21, James, 20, Ellie, 18, Aimee, 17, Josh, 16, Max, 15, Tillie, 13, Oscar, 12, Casper, 11, Hallie, eight, Phoebe, seven, Archie, six, Bonnie, five, and Heidie, three.
They also lost a son, Alfie, who was stillborn in 2014.
Sue, 48, who is a grandma PETE of 10, reveals, unsurprisingly, that with so many children, it hasn't all been plain sailing, and there have been times when their marriage has been tested to its limits.
Back in 2000, the pair expanded their already successful bakery business into new premises.
But when hand, foot and mouth disease hit the UK, the tourist trade plummeted and the venture failed.
Sue admits they were faced with "losing everything".
"We almost went bankrupt and thought we would lose the house.
I just kept thinking, 'There's no way out of this, and I really don't see how our marriage can survive," she says.
"The whole thing took its toll on me and Noel. Looking back, I can see that we would never, ever, have called it a day, but when you're in that highly pressurised moment it's hard to see a way out.
"There were days when I'd think, 'I'm leaving the business and Noel, I can't do it any more." "But our marriage has always been strong and having the kids kept us right. We stuck together and got through it. It was sink or swim and we chose to swim.
"We paid off the debts and vowed we would never, ever, be in that situation again." Of course, being parents 22 times over brings with it its own pressures, with the couple admitting it can be "so busy" they barely get time to have a proper conversation.
Sue is up by 7am to begin the military operation that is breakfast, while Noel has already been to work and is back at home to help with the morning rush.
"Some kids want porridge, some Weetabix, some toast.
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It's crazy," says Sue.
"We have them doing things in a particular order - the older ones go upstairs to get themselves ready, while I help the smaller ones.
"It's always around 8.45am when things get especially stressful if we're not out by then, we're going to be late for school." While Noel, 53, returns to the bakery for 9am, Sue then embarks on a mammoth tidying, hoovering and washing session they have two washing machines to cope with the five daily loads.
Noel is usually back for the school run and then teatime "is like breakfast all over again - chaos!" Even when the younger children are in bed, there will be stuff still to do, like getting uniforms ready for the following day.
Little wonder tha...