Brenda Walters, 73, of Stansfield Road, Todmorden, began knitting aged 13 because she hated the needlework classes her friends took part in at school.

And for the past month the great-grandmother has been feverishly knitting 1,080 little bobble hats for Age Concern - that's one about every 25 minutes.

The hats can be found keeping warm the tops of Innocent smoothie drinks at Sainsbury's, Halifax, from November.

The multi-coloured woolly accessories are part of drinks firm Innocent's Big Knit campaign to highlight the dangers of cold related illnesses in the elderly.

"I'm really pleased I reached my target of 1,000 bobble hats. I have enjoyed it very much," Brenda said.

"Last year I did between 300 and 400 hats, but this year I have done a lot more.

"The more you do, the more it spurs you on. I've been addicted since I was at school.

"Depending on what is on television, I can do one in about 25 minutes. I even take my knitting to bed sometimes."

Age Concern in Todmorden will receive 47p for each hat with 3p going to the national charity.

Chris Stocks, of Age Concern Todmorden, said Brenda had knitted one third of the branch's original target of 1,000 hats all on her own. The deadline for bobble hat entries was then extended to last Friday in the hope 3,500 could be knitted.

"She has done a great job," he said.

Age Concern says 25,000 people died of cold related illnesses last winter.

The charity will use the money to provide support to older people during the colder months, including hot meals, blankets and advice on how to keep their houses warm.