Cosmetic surgeons report a huge increase in the number of people purchasing Botox treatments in the run-up to Christmas.

The largest rise in Botox treatments are in Manchester and Leeds, according to the Harley Medical Group, which has 10 clinics across England.

Louise Braham, director of the medical group, said, "We've not seen anything like it."

The majority of patients having the treatment are women aged 30-45.

"Injectable treatments such as Botox , Restylane and Collagen are always very popular at Christmas, but this year they've been a total sell-out," said Ms Braham.

"It seems that Christmas parties are being viewed as marketing opportunities - the ideal time to show off to bosses."

"In many industries, youthful looks and style are thought to be important and a demonstrable way of showing you're still in touch with the marketplace," she concluded.

The Harley Medical Group has reported a 150% increase in injectable treatments in the first two weeks of December compared to the same time last year.

Botox parties and lunch hour make-overs have also helped to fuel the boom of injectable treatments over the past year.