14/08/2014 16:54 BST | Updated 22/05/2015 10:12 BST

Britain's Oldest Sisters: Three Great-Grandmothers With Combined Age Of 314

A toast to Britain's oldest sisters - trio with combined age of 314

They call them the 'Duracell Sisters' because they just keep going and going. And they are now celebrating reaching an incredible combined age of 314 to make them Britain's oldest sisters.

The oldest, Hilda Greening, who has just turned 109, Jean Underwood, 106, and Mary Hunt, 99, put their longevity down to good genes and hard work.

The trio from Gloucestershire have 12 children, 17 grandchildren and more than 30 great-grandchildren between them.

They were born to Victorian parents in the early 1900s, and have seen off 19 Prime Ministers, five monarchs and two World Wars.

Hilda celebrated her 109th birthday at The Grange Nursing Home in Tewkesbury, Gloucestershire, on October 18 with a party for 40 guests.

Jean lives in a residential home in Charmouth, Dorset, and Mary lives in Twyning, Gloucestershire.

Hilda's daughter Mary Skinner, said of her mother: "She said she would like to stay alive until her youngest sister is 100 in April. Then all three of them would be over 100."