The Radford family. [Image: Channel 4]

Britain's biggest family, the Radfords, have discovered the gender of baby number 22.

Supermum Sue and doting dad Noel, from Morecambe in Lancashire, proudly revealed last week they were adding to their massive brood - again - and their new arrival was due in April next year.

Childhood sweethearts Sue and Noel's first child, Chris, was born when Sue was aged just 14.

The parents were both given up for adoption after they were born, and they decided to keep Chris and raise him as teenage parents.

They got married and had their second child, Sophie, when Sue was 17.

Noel even had a vasectomy, later reversed, after baby number nine.

The pair face a monumental task each day just to feed, clothe and ferry about their huge brood.

They spend an estimated £30,000 a year of their own money bringing up their children - including birthdays with a reported budget of £100 per child and Christmas at £100 to £250 per child.

In addition, they also have a holiday abroad each year.

And as we previously revealed, the family keep their home immaculate - as they proved in a house tour of their 'gorgeous' home.