Middletons' Party Pieces to give your spare change to charity The Middletons read about the scheme in The Telegraph. The initiative, run by the Pennies Foundation, asks customers to donate pennies whenever they use their debit or credit card to pay for goods and services. In the same way as you are asked whether you want to leave a tip when you pay by card in a restaurant, you will be given the option to have your bill rounded up to the next pound or to make a one-off donation of around 25p. There are 43 million card holders in the UK today, and around 1 million card transactions an hour. If the UK's cardholders donated 30p each month, over £150m would be raised for charity every year. Carole Middleton, founder of Party Pieces, which also employs Pippa Middleton, the Duchess of Cambridge's sister, said: "I think this is simply a brilliant idea which I hope everyone will get behind. Just by donating a few pennies, your spare change, we can help make a huge difference to families who really need our support. The Middletons join 10 other retailers such as Domino's Pizza, Travelodge, the Zizzi restaurant chain, The Entertainer toy shop and the Rugby Football Union in setting up the electronic charity box, which has earned more than £435,000 since November 2010. Retailers that join forces with Pennies choose the charity or charities to benefit from most of the money collected, which include Birmingham-based John Taylor Hospice, RNIB and the Rainbow Trust Children's Charity. These retailer-nominated charities receive three-quarter of donations, with the remainder shared among other charities including Shelter, Together for Short Lives and the Children's Burns Trust. There is also the option for more localised giving. Pennies works with Cardsave, which provides payment card processing for small to medium-sized businesses, to help smaller retailers use Pennies to support charities in their local area. Alison Hutchinson, chief executive of The Pennies Foundation, said: "We're thrilled that these new retailers are joining the Pennies movement and demonstrating how simple and quick Pennies is to introduce in an online environment. Customer donations are already adding up, providing much needed funds for charity and ultimately making a huge difference to people's lives.