Stephenie Meyer's blend of vegetarian vampires and teenage lusts might have made her a bestseller around the world but UK readers at least aren't too keen to hang on to her Twilight novels, with the Mormon author joining the list of authors most donated to Oxfam shops for the first time.

Meyer makes her debut in fourth place, the charity revealed this morning, behind Da Vinci Code author Dan Brown – who tops Oxfam's most-donated chart for the third year running – Ian Rankin and Jeremy Clarkson. American horror writer Stephen King also enters the line-up of authors most donated to Oxfam's 685 shops over the past year for the first time, as do thriller powerhouse James Patterson and Jackie Collins, queen of the bonkbuster.

The charity revealed a certain amount of crossover between the books people most want to buy and those they are unwilling to keep, with Meyer also in fourth place in its bestseller charts, joint with prolific fantasy author Terry Pratchett. Stieg Larsson's Swedish thrillers took the late author to the top of Oxfam's bestselling authors chart, with chick lit writer Sophie Kinsella – creator of the Shopaholic books – in second place and Brown in third. Joanna Trollope, Alexander McCall Smith and Mills & Boon titles all entered the charity's bestseller list for the first time this year, with last year's chart-topper, Rebus creator Rankin, falling by the wayside.

Although she makes nothing from the sale of her books through charity shops, Trollope, author of The Choir, The Rector's Wife and most recently Daughters-in-Law, said she was "very gratified" at the news. "Their bookshops are most impressive - for the careful condition of the books as well as for the huge range of titles," said the writer. "I am so pleased to think that sales of my books are helping to support the vital work that Oxfam does."

"We're really grateful to everyone who donates their books to Oxfam, and it's fun to see how our most donated list changes year by year. This year Stephenie Meyer has joined the list at number four, but she is also fourth most sold so it's great to see that people are bringing us the books that shoppers are coming in to buy," said Oxfam's trading director David McCullough. "Oxfam is hoping to attract even more people into our shops and bookshops over the next two weeks to take part in Oxfam's annual Bookfest – the UK's largest book festival."

Oxfam said that the sale of two books could pay for one day's home-based care for a person living with HIV or Aids in South Africa, three books could provide 10 days' basic food rations for a family in an emergency situation, five books could buy a mobile phone to contact health workers in a medical emergency in Ghana and six books could pay for a hygiene kit for a family to help prevent disease.

Oxfam launched Bookfest on Saturday. Running until 17 July, it will see authors from Louis de Bernieres to the MP Rory Stewart taking part in events across the country. Last year, the festival increased book donations to Oxfam by 9%, bringing in £400,000 extra in book sales, and the charity hopes this year's event will be even more successful.

The most donated authors to Oxfam shops (with last year's position in brackets):

1 Dan Brown (1)

2 Ian Rankin (2)

3 Jeremy Clarkson (8)

4 Stephenie Meyer (New entry)

5 Alexander McCall Smith (4)

6 Stephen King (New entry)

7 Maeve Binchy (9)

8 James Patterson (New entry)

9 JK Rowling (7)

10 Jackie Collins (New entry)

The Oxfam shop bestseller list (with last year's position in brackets):

1 Stieg Larsson (2)

2 Sophie Kinsella (New entry)

3 Dan Brown (10)

4 Stephenie Meyer (4)

4 Terry Pratchett (8)

6 JK Rowling (3)

7 Mills & Boon (New entry)

8 Joanna Trollope (New entry)

9 Alexander McCall Smith (New entry)

10 James Patterson (7)