Traditionally, second-hand Christmas gifts have held a certain level of stigma they didn't deserve – but attitudes are shifting, it's not only become acceptable, but it's now considered cool.

Bursting with customers one afternoon the week before Christmas, a second-hand charity shop in London's Marylebone High Street looked even busier than the upscale retailers surrounding it.

Most of the one in four respondents who plan to give second-hand gifts said they would tell the recipient, with the most popular items revealed as books, toys, jewellery and clothes. Reducing ...